I'm just throwing this together quickly and included some google translated elements from the game's wiki page: https://wikiwiki.jp/chairi/

The game doesn't feature a decent in-game tutorial, basically all you need to know is press M on the keyboard which brings up the area map. from there just follow the current objective and your good to go.

Some immediate things I was puzzled about which might help;
Is there a Patch?

• Yes

Does the patch uncesor?

• NO

Wtf does the patch do?

• Thinner Mosaic aka pointless

Are there more Costumes?

• NO, they tease 5 costumes which are not playable
  (1 you can buy as DLC but your required to do an impossible puzzle to unlock it)

Is this the latest version?

• NO, this is an older build, the HD Gallery is Missing!

Is there a part 2 to this game?

• YES, but they stated that there will not be steam a release

Version 1.24
Steam Version

OS: Windows XP, Windows Vista, Windows7, Windows10
Processor: Intel Core 2 Duo @ 2.00 GHz or equivalent
Memory: 2GB
Graphics: Intel® HD Graphics or better
Storage: 6GB

The map can be accessed by pressing the M key and displays current information on where you are and your next objective.

Areas are shown in the map as a node, if the node is grey then the area is undiscovered.

As you progress through the game you will encounter save points, as you discover them they will be unlocked on the Map as a fast travel point. Selecting the node will allow you to fast travel to that save point if already previously discovered.

Hovering over a node the name of the area is displayed in the top left and to the top right is a brief description of your destination.

Take note of this map as it will be references later to describe progression through the game

after talking with the fairy’s,exit the abandoned building (1-2) and proceed to exit the courtyard (3)
fall down to the ground and head east to a wall, use your dash to slip under and enter the doorway to the
underground (5)
 
01.         Chief Fairy's House: Ceremony Room
02.         Abandoned Building / Secret Room
03.         Abandoned Building (Outside)
04.         Forest of Silence
 
Optional: (Areas: 41-46)
From the Forest of Silence (4)you can head all the way right toward Cliff Wall (41) this leads to a dead end
From the Forest of Silence (4)you can head all the way left toward the West Side of the Forest of Silence (42)
You can enter a series of underground dungeons by entering the door to the bottom left.
Reaching the end of the underground will reward you with a new weapon (however its not worth the trouble
to be honest)
 
41.         Forest of Silence: Cliff Wall
                              Obtain #1 Gold Stone
42.         Cursed Shelter: Forest of Silence (West Side)
43.         Cursed Shelter: Air Raid Shelter 1
                              Obtain #13 Gold Stone
44.         Cursed Shelter: Air Raid Shelter 2
45.         Cursed Shelter: Air Raid Shelter 3
46.         Cursed Shelter: Air Raid Shelter 4
                              Obtain #14 Gold Stone

make your way through the series of under ground areas heading in an eastern direction until you arrive at the
graveyard area 5 (9)
Jump down to begin a fight with the sand worm boss. After beating the boss make your way to the water way (10)
 
05.         Slaves Graveyard 1
                              Obtain #2 Gold Stone
06.         Slaves Graveyard 2
                              Obtain #3 Gold Stone (right behind the top of the ladder, to dash toward the left of the wall hidden space
there is)
07.         Slaves Graveyard 3
08.         Slaves Graveyard 4
                             Obtain #4 Gold Stone (on the middle of the room followed by a ladder in,room and three-stage jump along it go to. There is a save point on the right
and a monster on the left)
09.         Slaves Graveyard 5
 

head towards the right and talk with the fairy Libre then continue to the east and jump down the water hole
work your way through the waterways (11 - 14) to the well (15).
once there jump into the bucketmove to the right and attack the switch on the way and the bucket will pull you
up.
once it stops do a triple jump to enter the well passage (16) continue through to the exit leading to the Old
Town (17)
 
10.         Under Ground Waterway 1
                              The magic barrier on the way will be able to pass after fighting VIVI
                              secret door to training grounds can be found by jumping in the left corner of the room
                             Obtain #20 Gold Stone
11.         Under Ground Waterway 2
                             Obtain #5 Gold Stone
12.         Under Ground Waterway 3
13.         Under Ground Waterway 4
14.         Under Ground Waterway 5
15.         Well
16.         Passage to the Well
 
Optional: (Areas: 39, 68)
The Training Grounds can be accessed by jumping to a secret hole in the upper left of the Under Ground
Waterway 1 (10)
Breaking the blood Stone will reveal a ghost and after you interact you will be teleported to the training
grounds (68)
After the Chieftain’s death read the inscription on his treasure box then fast travel to the Under Ground
Waterway 1 (10)
And enter the large doorway that was previously blocked by a magic barrier, it will lead to Altar of Valdra (39)
Interact with the alter twice in order to read the full inscription from the way and the treasure box
 
39.         Altar of Valdra
68.         Training Grounds

head west (left) through the old town(21, 22) until you read the catacomb entrance (23)
after you read a small cliff jump down then dash to the left to access the passage leading to the catacombs (24)
 
17.         Heidel Castle Town: 1-1 City on the Left Gate
21.         Heidel Castle Town: 2-1 West of Street Stall Lane
22.         Heidel Castle Town: 1-1 Small Well
23.         Forest of Silence: Catacomb Entrance
 
Explore the Catacombs (Areas: 24-27) !! BOSS Fight: Champ !!
zig zag down through the catacombs (24-26) until you meet up with the fairies.
after talking with the fairies,the eastern passage will become blocked off. 
head to the west to catacomb 4(27) and defeat the Boss Champ.
24.         Catacomb 1
25.         Catacomb 2
                             Obtain #7 Gold Stone
26.         Catacomb 3
27.         Catacomb 4
                             Obtain #8 Gold Stone

Optional
Travel East (Right) through the town and you can do the bonus events at the farm and at the circus
18.         Heidel Castle Town: 1-2
                             Obtain #6 Gold Stone

after defeating the boss head left and jump over the ladder and jump down to the lower passage. continue to
zigzag to the end
once there you will find a platform with a purple teleport pad, interact with the pad to teleport back to the
catacomb 2.
after being returned to catacomb 2 (25) pay attention to the background as you move to the right of the room
looking for a stone table with a triangle symbol above it.
while walking near the table, a red arrow should appear, interact with it to unlock the door in catacomb 3 (26)
area.
 
Chase the Fairies (Areas: 26, 28) !! BOSS Fight: Gluttonous Mummy !!
Proceed right and zig zag down to where you had talked to the fairies in catacomb 3 (26) or fast travel to save
point in catacomb 3 (26)
from the save point drop down and turn right and follow the passage to catacomb 5 (28) and proceed right to fight
against the boss
once the boss has been defeated take the door to the right which leads to prison rooms.
28.         Catacomb 5

head to the far right of the room to find another save point then go through the hole in the wall to free the fairies
Once you enter the prison you will find 9 fairies that need saving and a destruction percentage at the
top.
you need to destroy 90% of all destructible in that area before taking the door at the bottom to the prison cell.
in the prison cell you will find the last fairy and be able to destroy the rest of the destructible
once you have a destruction rate of 100% you may return to the prison area and leave through the hole in the
upper right of the room.
you will appear on a slope, head right to the ledge and jump down into catacomb 6 (29)
 
Optional (Areas: 40, 69)
               Instead of jumping down, jump up and take the exit to the left this will bring you to Back
Door Of the Old Catacomb Entrance (40)
               From there make your way towards the exit, when you reach the last gate before the
exit of the area, jump up high and to the left.
               You will be able to land on top of the level and you should be able to move to the left
to a secret door which leads to the Mansion of Ordeals (69)
               Then Mansion of Ordeals (69) is where you can obtain the gunslinger costume if you purchased
the DLC.
               However,they make you survive waves of enemies without taking damage so getting the DLC
can be extremely frustrating to unlock after buying
              
40.         Forest of Silence: Old Catacomb Entrance (Back Door)
69.         Mansion of Ordeals
 
Escaping the Catacombs (Areas: 28-34)
dropping down from catacomb 5(28) beware of jumping in the water as there are many leeches
swim out of the water to the right to find a locked gate, attack the gate to break the chains
then enter the gate to enter the Closed Area 1 (30)
proceed through Closed Area 1(30), Closed Area 2 (31), Closed Area 3 (32), Closed Area 4 (33) and Sewage
Management Area (34)
 
29.         Catacomb 6
30.         Closed Area 1
31.         Closed Area 2
32.         Closed Area 3
33.         Closed Area 4
34.         Sewage Management Area

in the Sewage Management Area(34) jump down and head to the far right where you should find a large turn
wheel
attack the turning handle until the water level lowers down to the ground
head back to the middle of the room jump up and make sure to save at the save point.
Jump down from the save point to enter through the middle door of the room.
As soon as you enter the next area, to the right of you are two Gluttonous Mummy mini bosses
Defeat both bosses to unlock the doorway to the next area.
 
Step (Areas: 33, 34) !! BOSS Fight: Vivi !!
after defeating the two Gluttonous Mummy boss exit the Sewage Management Area (34)
and enter back into the back side of Closed Area 4 (33)
jump to the middle platform in this room and interact with the wall to reveal a hidden doorway
enter this doorway to enter Vivi’s laboratory and to start the boss fight with Vivi
after defeating Vivi you will be returned back to the abandoned building (2)
 
Optional: (Areas: 35, 36, 37, 38)
After defeating Vivi, return to Closed Area 4 (33) and enter the portal
You will instead be brought to a chain of dungeons in the Abyss
 
35.         Abyss 1
                             Obtain #9 Gold Stone
36.         Abyss 2
37.         Abyss 3
                             Obtain #10 Gold Stone
                             Obtain #11 Gold Stone
                             Obtain #12 Gold Stone
38.         VIVI's Laboratory

fast travel to the passage to the well (16) exit to the old town (17)
head to the right to cut through the town (18) and past the castle side entrance (49)
until you reach the area Near the Spider Ruins (52)
 
18.         Heidel Castle Town: 1-2 Street Stall Lane
 
Optional: (Areas: 19, 20, 47, 48, 49, 50, 51)
               There are a few extras to explore such as the circus, farm, and even Santa’s house
              
               19.         Heidel Castle Town: Circus Street
20.         Abu Farm
47.         Berry, Berry Circus
48.         Berry, Berry Circus: The Costume Show
49.         Heidel Castle Town: Castle Side Entrance
50.         Entrance to Santa's House
51.         Santa's House

Enter the Spider Ruins House and talk with Chibi Gori, after enter the door next to him
follow through the corridor and to the next room until you find the sparking item on the ground next
to 4 zombie that are chained to the wall. Pick up the item to obtain the basement key
head back to the main room with Chibi Gori but head to the right of the room and take the stairs
down to the basement.
fight you way across to the end where the honey room then wait for Chibi Gori to thank you
Make you way out of the basement and back to the main room
once you proceed to the left to leave the boss fight with Chibi Gori will start
 

once you have defeated Chibi Gorihead back where you found the basement key
where you will find a nest of spiders hanging from the ceiling.
after killing the nest of spiders,you will also be attacked by 4 zombies
defeat them all to unlock the attic passage way
jump up into the ceiling to enter the top of the roof of the spider ruins house
step jump directly to the right to enter Mount Heidel (53)
make your way through the mountains until you read two standing statues
pass through the middle of them to enter the Old Bridge (54)
proceed across the bridge to enter the Quinn Village Entrance (55)
 
52.         Near the Spider Ruins / Spider Ruins
                             Obtain #15 Gold Stone
53.         Mount Heidel
54.         Old Bridge
55.         Quinn Village Entrance
                             Obtain #16 Gold Stone

in Quinn Village (56) talk to Blanc and ask about the Monsters
then talk to Noir where she willtell you to talk to Blanc again
Return back to Blanc and ask her about Vivi
exit the room to start begin a sequence of cut scenes which
will lead up to the boss fight against the destroyer
 
               56.         Quinn Village

once the destroyer has been defeated you will be spawned in the village house.
talk with Midea and she will request that you get the fairy medicine from the
fairy hide out in the abandoned building (1)
fast travel to the abandoned building (1) and talk to Cherry blossom
after she gives you the medicine fast travel back to the Quinn Village Entrance (55)
enter the Quinn Village (56) then enter the door to the far left of the area to return to Midea
talk with Midea and she will tell you to dump the medicine into the hot spring
Leave the house and head to the left to the Cliff (57) and defeat all enemies in this area
 

once all the enemies have been defeated at the cliff return to Quinn Village (56)
then talk to Blanc who should be waiting at in front of the house.
Follow her left back to the cliff(57) and down to the hole to the hot spring (58)
interact with the clothing rack to enter the hot spring (59) walk to the middle of the hot spring until you see
it turn red
leave the hot spring (59) and exit the hole to the hot spring (58) back to the cliff (57)
there Blanc should be waiting at the elevator, talk with here are she will inform you
to jump off a ledge to reach Vivi
 
57.         Cliff
58.         Hole to the Secret Host Spring
59.         Secret Hot Spring

head back to the beginning of the cliff entrance where you will see a standing statue
pay attention to vertical mud trail that goes up along the rocks
jump up along the vertical path and to the left to land on the ledge
once on the ledge jump straight up to reach the Mountain Peak (60)
Once in at the Mountain Peak (60)jump up the ledge to fight Melusine
after you have defeated the boss,you will be returned to the house in Quinn Village (56)
              
               60.         The Mountain Peak
                             Obtain #17 Gold Stone

once in the house in QuinnVillage (56) talk with Midea and it will start a sequence
where you play as Melusine who infiltrates the shelter
once the sequence is done leave the house and head left to the cliffs (57)
proceeding down to the hole to the hot spring (58)
just a few feet from the elevator there will be a black door
enter the door to the Suspension Bridge to the Evacuation Shelter (61)
proceed through the area to read the Evacuation Shelter (62)
 
61.         Suspension Bridge to the Evacuation Shelter

once you enter the Evacuation Shelter (62) a cut scene will play out
after the scene head to the middle of the area past the guard and enter the door
to the Residential area (63) to trigger another cutscene
after leave the Residential area (63) and proceed to the right of Evacuation Shelter (62)
Take the elevator down to the under-ground area where you will fight a gang of men
after defeating the gang, you will be respawned in the Residential Area (63)

in the Residential Area (63) head through the first floor and reach the second floor
enter the first door from the left of the second door
talk with rose and tell here you need a bomb.
after will be re-spawned to the Evacuation Shelter (62)
head to the far right and take the elevator down and take the far door to the right to
the Underground Cave (64) proceed right break the door and take the second elevator down.
head to the end to find a pile of rocks interact with them to use the bomb to clear the rocks
follow through the end of the cave until you reach an archway to that exit to the swamps Near the Border (65)

62. Evacuation Shelter
63. Residential Area
64. Underground Cave

proceed through the swamps Near the Border (65) and through the Swampy area (66)
half way through the Swampy area (66) is a side trail covered in blood
when you reach it, you will be respawned there, head right until you find a wounded solder.
talk with the wounded solder then leave the side trail and continue right to reach the boss

65. Near the Border
66. Swampy Area
67. Observation Mountain

Optional (Areas: 66)
After beating the game return where you found the wounded solder to start a boss fight with Mistina

fast travel back to the Evacuation Shelter (62) and enter then Residential Area (63)
enter the first door from the left and talk to Blanc to start a cutscene
after the cutscene talk to Blanc again and say yes to confronting the doppelganger
another cutscene proceeds then leads into the boss fight with the Destroyer

after defeating the destroyer make your way back to the entrance of then Residential Area (63)
there talk to Grise who well tell you to rescue Noir.
After talking with Grise jump over the rocks to the left and enter the door to the chieftain
then leave the room after the cutscene and head back to Grise on the right side of the rocks
Enter the Residential Area (63) and enter the first door from the left and kill all the zombies
Once the zombies are cleared out Rose will take you to the hidden room and tell you save Blanc
Leave the Residential Area (63) back to the Evacuation Shelter (62) and go to the right.
Take the elevator down to the Under-ground cave and proceed all the way to the end to find Blanc

head back to the Residential Area (63) and make your way to the top floor
to the Observation Mountain (67) and talk with Vivi
next head right and jump over the cliff where you will find Vivi waiting again
Talk with her and tell her your Ready to fight Eleanore
Vivi summons Eleanore and the boss fight begins
after defeating Eleanore the game concludes and the credits roll, congrats!!
you will be able to save a clear game which gives you access to the secret room
from the abandoned building (2)

67. Observation Mountain
                             Obtain #18 Gold Stone
                             Obtain #19 Gold Stone