Minor pre-purchase/play advice.
If you are new to WH40K space marine universe/lore you might want to research a bit into the lore and atleast get a base understanding, else it will probably confuse the heck out of you lol

Little about my personal perspective on arpgs and this game
I'm actually not a huge arpg fan, well the ones from this view perspective. I have a few but this is the only one I have with 1100 hrs invested in. (Been playing since April 24th 2020) I promise even after this review that time will still be increasing.

About classes and builds
I currently have 1 of every class and 3 of the 4 capped at level 100. Lotta build diversity and multiple metas per class and also even sub par builds that still are very interesting and fun to use. That is one of the main reasons I love this game, is the class build diversity and weapon diversity. All classes can use range or melee weapons and even a mix of both at the same time. Classes in some ways can have multiple roles.

Crusader he can be melee 2h warrior or 1h & shield baring tank if you like that raw range crowd control damager he can do that pretty effective also.
Assassin can be laid back in the pack sniper or a quick on the crits up close in your face trickster with time manipulation and hit run tactics.
Psyker this is your mage class cast them wicked chaos spells or become battle mage with sword or a gun do lil of both. Your imagination is your only limiter really.
Tech Priest that you get with the (DLC prophecy) is a minion master, you can choose your weapon be it range or melee also. But most of your offense comes from minions. Your minions also have progression, in the gear department. Tech Priest I would consider a more advanced player class, because you have to work minion gear as much as your own. So might wanna save him till you get atleast 1 level 100 character that way can fund him lol.

On to missions and story.
Story is a one shot thing per char unfortunately, meaning you can't go back and do repeats of it with the same character.
Not a huge deal but even I would love to do it again at level 100 be pretty neat, w/e though no biggie.
After story is complete and at any time outside of story, all missions are randomly generated and technically there is no true end to this game, it only ends when you quit playing it.

I do highly recommend that you get the prophecy expansion, it adds a little more story for the 3 martyr classes to play but the tech priest class gets a bit shafted as it can only play the prophecy story line even if you own martyr.
Just buying it for the class alone is worth it in my opinion. It is one of my most used and loved classes.
(like a necromancer in some ways if you need that deeper detailing)
There is a system called tarot cards these cards give you a bonus and at the same time makes enemy more difficult. Like the saying I use in RL, "caresses you with 1 hand and stabs you with the other" lol. It's a good system as it allows you to set the challenge yourself, risk and reward type system. The game does have 4p Co-Cp and PvP.
You can play all missions including story in Co-Op.

Lets go with technical stuff, updates and bugs
Yes there is bugs, I'm here to give you the 100/100 review as deep and truthful as i can.
Most bugs that exist can be solved by restarting the game. Since I started most of the bugs I encountered has been ironed out. Some still linger but not to the point that it infuriates me or anything. Some I've got used to, don't even notice anymore. The developers are still updating and adding to the game, fixing bugs etc. The game is still very much alive from a developer point of view, the community is fairly small, yet there is plenty of people including myself that stroll the forums, always wanting to help to the best of our ability, knowledge and experience. Sometimes these people take breaks from the game, including myself. Though we usually return even if not actively playing the game just to offer up a helping hand here n there.

Final Thoughts
My personal meta score 90/100
Buy this game and play the sh*t out of it like I have. If you like what my review says, there is a good chance you will like this deep, beautiful WH40K game, it is a rough edged work of art. I still enjoy this game as much as I did the day I started playing it, to be straight about it. I actually like it more today then I did as a newbie. That says alot, I can't say I own many games I still love to play after 500hrs much less 1100 hours and still counting. I play completely as a loner 120% solo player. (I prefer to). I could give more major positivity and lil more minor negativity from my review, some features and bugs I did skip but I feel the review is becoming so long most might not want to read it. I could understand that entirely.
Hope you enjoyed my review. Take care and happy gaming!

I enjoyed it, even more fun with least 1 co-op buddy. I played about 594 hrs as a solo player and other 50 in co-op. By time i got to that point i was playing challenge and incursions solo and my co-op buddy struggled to even play hard lol. It's a great game lots of weapons and stuff to collect and different build types for your char by time I got to 300hrs I had every armor set synergies sweet weapons had some really great setups.

i was about to reinstall it (2-29-2020 last played 9-5-2019) and caught the division 2 on sale on ubisoft store for $2.99, so I said oh yea! I'll buy and play it now. I haven't played yet but soon literally just got it. This is a solid place for a new comer to start though "The Division 1". So buy it and sink some hours killing looters and gang bosses. i never liked the dark zone PvP stuff, I played it a little but i felt was just a gank fest not really my cup of tea.

Some of you guys might like that sorta thing to each their own. Yes i highly recommend this version. IDK bout 2nd one yet we'll see. There is a reviewer on here some where says you might like this if you like ghost recon or splinter cell but it is nothing like either one of them not even the slightest in mechanics. It is more like "mass effect's" cover combat also the active combat skills.

Char load outs, weapon stats and mechanics, mods, passive skill setups and types outfit system and account boundness of cosmetics remind me more like that of the free to play game from trion called "Defiance". If you have ever played both games I mentioned, you'll see a huge resemblance to both. Definitely the Defiance resemblances.

Take note:
If you plan on just soloing, just get underground and maybe survival DLC. Personally, it wasn't what i was into. (the survival) I played underground the most and the other DLC contents are best for pvp. Outfits and weapon packs might not be worth it to you, just depends what type of person you are.

You can't use the custom weapons end game (they are max level of 4 and can't be upgraded just special non changeable skinned weapons for noobs) you really only need 1 char in this game. (though 2+ help you collect division tech and phoenix credits more quickly, need this stuff to upgrade weapons at level 30) 1 char can do everything and any cosmetic item unlocked is account shared.

DLC weapons only good till bout level 6 after that they are useless. You can loot weapons just as good and better as dlc weapons. DLC armor same deal. Some of the weapon skins you'll probably not use lol You'll find a lot better in game unless you just want to look like a fool with christmas wrapped guns..... The outfits themselves they alright, I use snow camo and urban camo a lot on my char to be more role play like, so get them if you want the cosmetic options.

You'll unlock a lot in game regardless. I'd recommend them on sale, because it is just cosmetics wont change anything. The camo wont hide you to the AI or anyone in a PvP zone because you got a big a55 name over your head lol and AI once they spot you they hunt you down. So cosmetic items are one those things some people like the options and some people really don't give a sh*t right? Like I said you'll unlock a crap ton in game even without the DLC.