Total Achievements: (35)
100% completion time: Varies by hours but with cheats it's 1 hour less.
Difficulty modes: None
New Game+: None
Missables: Maybe
Mode: Multi-Player

Achievement Types:
1) Humans: (22)
2) SCPs: (9)
3) Miscellaneous: (4)

This guide is going to be focused on public server and private server thanks to console command on private server, so while you can attempt this with private server of your own I tested it and it never grants any of the achievement but the others may have it covered so for empty servers with players to help you aka friends you'd get this done in less than 1-2 hours. Most of these achievements are just not too bad to get although the only thing you should wait is the Halloween and Christmas achievement. As for public, enjoy getting various kinds of achievements hence this is a checklist guide rather you can earn this and there randomly depending on your situations.

Assuming you have people in your friend list or someone willing to support you, this is one of those games that is easily cheesed via consoles by someone and I will rely on that for achievements.

The difference unlike the other 100% achievement guides is that this is a 2023 version, some requirements like I mentioned later had changed but at least old informations should help generally.


2023-04-04: Guide created, all 35 old achievements and name and description present

2023-07-24: I have noticed the achievements name and description changed, this is both good and almost annoying but you will get used to the newer requirements and yes I posted the other guide so you can compare what it is that is if the author didn't change his 2021 achievement guide. This guide would be a total mess if I allow the old description of achievements to be left out so I decided to rework it but of course I will add strikethroughs on old descriptions and my explanation, in short Escape Artist now says you need to be the first to escape rather than 3 minutes but I type this here when I still haven't 100% this game.

If you have more tips on achieving the achievements post-change then comment down.
https://steamproxy.net/app/700330/discussions/0/3832042807515114689/ On this link achievement requirement had changed and so will few context be changed in this guide so watch out for crossed texts.

There are many types to keep in mind, I will list them all so you know how this will play out but there are other guides with strategies on how to use the SCP and other human roles.

1. Heavily relied information from this website.
https://en.scpslgame.com/index.php?title=Main_Page

2. If you are curious on the private server.
https://www.youtube.com/watch?v=iQfTxXa7jHU

2. All thanks to this guide for some info in order to explain accordingly.
https://steamproxy.net/sharedfiles/filedetails/?id=2262350637

3. Better to watch this if you need to, do not necessary need to know all but a general idea should suffice enough.
https://www.youtube.com/watch?v=iA07J7khbGs

4. Luckily, here's a map I found made in 2023.
https://steamproxy.net/sharedfiles/filedetails/?id=2919451768

Generally can be not categorised (events) but have facility achievement. For keycards, check here:
https://en.scpslgame.com/index.php?title=Keycard This shows all list of locations needed to be opened by respective keycards but of course all you need are the max tier key cards (O5 Keycard (Tier 4 Administration)) and you spawn one as Chaos Insurgent that literally opens all doors (Chaos Insurgency Access Device (Tier 3 Administration)) well except for the Nuke Access room, one alternative keycard specifically for Alpha Warhead can be opened with Facility Manager Keycard (Tier 2 Administration).


Respective to the official wiki for SCP: Secret Laboratory (2017) page for the copy-pasted info and few others on the Warhead section:
To turn on the Alpha Warhead, one most locate the silo in Heavy Containment Zone and flip its lever into the "Ready" position. This can be done by anyone except SCP-079.

Afterwards, one must go up to the Surface Zone and enter the Warhead Activation Room. Inside, there is a button locked underneath a glass panel, which requires a Keycard with Nuke Access to open. Afterwards, the button can be pressed by anyone if the Alpha Warhead is enabled.

Then we have a default time of 90 seconds (Server size-wise it can be 80-120 seconds) to get out of the facility, your choice after reaching the surface can be done either the following here.

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That was... close.
Cancel the Alpha Warhead detonation within the last 15 seconds of the countdown.
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Anyone access with the max leveled keycard as mentioned should be able to activate this then you need to go on the surface via elevator, make sure to not get killed by anyone.

To deactivate the Alpha Warhead sequence:
To cancel the detonation sequence, a red button located in the Alpha Warhead Silo on the control panel must be pressed. When this happens, the sirens will stop, the lights go back to normal, and C.A.S.S.I.E. will announce the warhead has been cancelled. The lever can also be flipped back to the off state to stop people from turning the Alpha Warhead back on, forcing people to go back to the Nuke Silo to flip it back on.

We can reactivate the warhead to try again:
If the detonation sequence is started again after being cancelled, C.A.S.S.I.E. will announce that the sequence has been resumed, and will say how much time is remaining. The time remaining is based off how much time was left when the Alpha Warhead was last canceled.

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T-minus 90 seconds...
Survive a successful Alpha Warhead Detonation.
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You must be on surface before within 15 seconds at sharp but the detonation would take a while.

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Happy Halloween!
Play the Halloween version of the game.
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Launch the game at the 30th of October at least from what I saw.

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Merry Christmas!
Play the Christmas version of the game.
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Launch the game at mid week, specifically at the 23rd of December at least from what I saw.

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Is This Thing On?
Broadcast a 'helpful' message via the Intercom.
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Requires a mic, you can say anything there is no specific, especially making your own sounds, I did this on the private server.

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Fire In The Hole!
Kill an enemy using a grenade.
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To unlock this achievement we must find a grenade located in an armoury or by becoming an NTF via spawn. Aim the grenade to the ground against your enemy.

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Overcurrent
Try to recharge the Micro H.I.D.
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We just need to find a tesla gate, then hold the right mouse button until the meter arrow ends up to 0% then you kill yourself to the Tesla Gate.

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He’ll Be Back...
Successfully escape from the Pocket Dimension.
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To unlock this achievement we will need an SCP-106 who teleports you to the pocket dimension. There are multiple corridors as you are in there surrounding the center where you are teleported to, make a marking on who dies then wait for the right time otherwise it's a matter of luck to exit to where you last got teleported initially at. I got this as a Chaos Insurgent luckily was at around 14 HP.

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Be Polite. Be Efficient.
Kill five enemies in less than 30 seconds.
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Go to the armoury and pick up the gun, once you're done you have to wait for 5 players who are armed to kill you but with partners to boost it is manageable. This should be easy on Light Containment if you are lucky to find various kinds of players.

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Escape Artist
Be the first to escape the Facility.
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Any humans such as Scientist or Class-D should do this. I tried this on private server but it does not work. The layout is changeable according to replayability. To get this, it does not matter anymore how much time it takes to escape just only by escaping first will unlock this achievement since the requirement changed.

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Microwave Meal
Kill an SCP with the Micro H.I.D.
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You can find the Micro H.I.D. by the Heavy Containment with an NTF blue keycard, it will always be at the place where it's inside the spawn is randomised so figure out where it should be but the best can be near the System elevator for me it can happen at Elevator A area.

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Executive Access
Obtain a max-level keycard.
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To unlock this achievement, we will need to use the SCP-914 which is to convert your items to another different one then you pick it up. For more info on keycard outputs, check here:
https://en.scpslgame.com/index.php?title=SCP-914/Outputs

Now down below is information on how-to and respective to the OP from TSA forum[truesteamachievements.com] on how to get this:

Originally posted by Sharck:

Spawn as either Class-D or as a Scientist. Inside Light Containment you will find SCP-914's Containment Chamber, marked as 914 above the doorway. Any keycard will open it.

Place the keycard inside of the leftwards room of 914, and activate the machine on the setting "Fine." Pick up the card on the opposite end of 914 when it opens and repeat several times until you get the black and white O5 card.
There are guides to exactly what each setting will do, but typically 'Fine' will bring your keycard to an O5 after 914's activation 3-4 times.

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Walk It Off
Survive a fall with less than half of your health remaining.
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To unlock this achievement (Refer to Ha! I didn't even feel that! Achievement for additional info) you can do this in the surface at the stairs as human, I attempt this on private but it seems that didn't work out of my favour.

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Ha! I didn't even feel that!
Use adrenaline to survive a hit that would otherwise kill you.
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Use the adrenaline which is obtained by being any humans so me in this case as the Chaos Insurgent in order to survive the fall. Be sure to be in full health before doing this and additionally as you spawn on the surface you can immediately jump from the bridge rail and survive with 12 HP, two achievements including the mentioned will be unlocked.

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It's Always Left, Brothers!
Escape as Class-D personnel.
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Simple as it is, no time limit as a good news just try to survive until you reach the surface to the one escape point near where the NTF spawn is and you will also spawn as one of Chaos Insurgents.

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Access Granted
As Class-D, kill a Scientist holding a keycard.
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You can find an armoury early on which houses few weapons the security or possibly scientist will ever go to, then sneakily grab the gun and kill any scientist.

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... You Thinking What I'm Thinking?
Find any gun as a Class-D.
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Go to an armoury and arm yourself with one gun.

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Property of the Chaos Insurgency
Liberate two or more SCP objects from the Facility, while escaping as a Class-D.
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I have the list of Item SCPs on the SCP section. These can be anything so as long as you get two then your fine.

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For Science!
Escape as a Scientist.
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Similar to other achievements involving Escape.

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Friendship
As a Scientist, successfully upgrade your keycard alongside any amount of Class-D.
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This is tricky as with randoms you need to be on the lookout with the Class-D subjects inside the upgrade station, but with friends it is easy.

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They Are Just Resources...
Kill 50 Class-D as a Scientist.
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There is no time limit on this one, find a gun and choose violence, it gets carried so no loss of count when starting new round.

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If you want something done right...
Kill an SCP as a Scientist.
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The easiest to do this is using a Micro HID. I do not think I got this along with Microwave Meal Achievement so you might need to do this separately.

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Lights Out
Respawn as Nine-Tailed Fox.
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Chosen by the game, just be patient until you become NTF via startup round before beginning.

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Secure. Contain. Protect.
As MTF, kill the final SCP in a round.
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You need to successfully re-contain SCP-106. Naturally you'd get this if you only kill the last SCP as the MTF, the others will do their bidding. It can be any SCPs even the SCP-049-2 at least.

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We of Delta Command...
Respawn as Chaos Insurgency.
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You can get this achievement by spawning after escaping as D subjects. You can attempt to escore your fellow test subjects to the surface.

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Change in Command
Disarm an MTF operative.
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Disarm any Mobile Task Force soldiers. Be either a Class-D or Chaos Insurgent and use the disarmer on them or whoever is hostile as faction. I may have put this here when I could put it on Human section but all you need to do is disarm non-foundation members it can be also a Security Guard.

Anything related to SCPs whether players killed by them or the included keyword SCPs (with exceptions to human-related SCP kill) will be in this section. For more info on SCPs and related with it, check out this official page section here: https://en.scpslgame.com/index.php?title=SCPs

Here are the list of Item SCPs you can find, these will be related to our achievements in here. Most of these can be taken with you to escape or use to your advantage.


1. SCP-018: Can be found in a Bulletproof Locker №7 located around the map, which requires a Keycard with both Containment Access 2 and Checkpoint Access.

• Bounces around, gaining momentum and damage with each bounce.
  
• Single use.

2. SCP-207: Can be found in Bulletproof Locker №7s around the map, which require a Keycard with both Containment Access 2 and Checkpoint Access.

• Makes the user faster but slowly drains HP.
  
• Gives the player infinite Stamina.

3. SCP-244-A: Can be found in a Bulletproof Locker №7 located around the map. SCP-244-B (Blue thin vase) has a 35% to spawn in a random room in Heavy Containment Zone. Unlike SCP-244-A (Thick vase), it will spawn fully activated, acting as a small environmental hazard. SCP-244-B will never spawn in SCP-939's Containment Area.

• Environmental Hazard.
  
• Applies freeze to enemies.

4. SCP-268: Can be found in a Bulletproof Locker №7 located around the map, which requires a Keycard with both Containment Access 2 and Checkpoint Access.

• Makes the wearer temporarily invisible.

5. SCP-500: Can be found in Bulletproof Locker №7s located around the map, which require a Keycard with both Containment Access 2 and Checkpoint Access.

• Fully Heals the player on use

6. SCP-1576: Can be found in Bulletproof Locker №7s located around the map, which require a Keycard with both Containment Access 2 and Checkpoint Access.

• Communicate with the dead (Spectators).

7. SCP-1853: Can be found in Bulletproof Locker №7s around the map, which require a Keycard with both Containment Access 2 and Checkpoint Access.

• Increases weapon related motor skills in combat.

8. SCP-2176: Can be found in Bulletproof Locker №7s around the map, which require a Keycard with both Containment Access 2 and Checkpoint Access.

• Countering SCP-079.
  
• Trapping players in a room for a short time.

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High on the Wings of Caffeine
Escape while under the effects of SCP-207.
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You can try getting this achievement with Escape Artist, by saving the item before the end of your escape and using it, it should be a walk in the park.

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Crisis Averted
Use SCP-500 when you're about to die.
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Have the SCP-500 on you then while getting hit by any SCPs or hostiles you should take it. To unlock this, although the bridge option is good to do I think the stair should help with this and you need to ultimately be at 20 HP below according to testing and then use the item to heal yourself.


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Anomalously Efficient
As an SCP, get a kill within the first minute of the game.
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By luck, this should be easy to get depending on the presence of SCPs, make sure to get near to any SCPs. Instead of you dying, you must get this by being any SCP you spawn as, try to see if the Plague Doctor will work but it should be as an SCP killing them within one minute.

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I'll Pass, Thanks
As an SCP, kill someone who's charging or firing the Micro H.I.D.
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Kill them when they are firing the MicroHID missing, no need to explain further but it can be any SCPs such as SCP-106.

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My Cure Is Most Effective...
Cure ten people in a single game.
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To unlock this achievement, we must allow SCP-049-2 (our converted zombies) to kill and you turning humans into zombies.

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Proceed With Caution
Successfully pass through a Tesla gate that SCP-079 is monitoring.
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Spawn as any SCPs, go near the tesla gate and wait for few seconds before the tesla appears then walk through it. I think you need a partner who is an SCP while you are human. While the player is SCP-079 you can be any SCP or human and safely pass through the Tesla gate.

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Pacified
Kill SCP-096 while it’s entering rage.
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This time I will leave this old description achievement requirement:
Involuntary Rage-Quit
Die while entering a rage as SCP-096

Spawn as SCP-096, then enter rage mode near the tesla gate but you must time this or else you will miss it, then die and your set for this achievement. You will need more partners to kill the SCP-096 when it's on rage mode, even Class-D and Scientist players can do it. When your human teams are ready then wait for Shy Guy to begin his initial enraged but this almost can be tricky due to the timing but it can be achieved before the Shy Guy player will begin killing you.

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Melancholy of Decay
As SCP-106, capture a player within five seconds of emerging from the ground.
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This is easy as a Class-D subject so just die. However, if you like to escape the chances is almost not possible but you can get this achievement by finding any corpse and attempt to exit through passing it, be cautious as someone will drop weapons or items near the 'exit' and you get tricked by it. This means you need to use one of your ability and go near a Class-D subject to touch them, this will send them to the dimension of yours and the achievement will unlock. Left click to hit two times to TP them to the Pocket Dimension.

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Don’t Blink
Successfully evade SCP-173.
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Is This your first time?
Let SCP-173 snap your neck.
By the time you're seeing SCP-173, run away from it. This proved to be easy as either a random do not see your presence inside Light Containment (at least that is how it happened for me) or you just have a friend who does this, this won't take long to do.

While the game has received good and bad updates some annoyance, it has a possibility to experience different things thanks to the various cast of mechanics, roleplaying like you'd expect from Garry's Mod and completing objectives. I would recommend only if your willing to play this with friends or handle the absurd moments. However I can't recommend playing this in long term there is other SCP games better served for fun.



If you want to consider donating, I have the link here so you can send your money. Otherwise if not then that is fine, continue using this guide at your own benefit I won't ask too much.
https://www.buymeacoffee.com/Diviision

https://steamproxy.net/sharedfiles/filedetails/?id=2957870846