Here are all 17 chests in Museum.
UNSIGHTED All Museum Chests
Map of the area can be found here:
01:
Next to the entrance and teleport, need spinner.
02:
Take the elevator next to the teleport, it’s on the other side of the railing
03:
At the right side, next to the aquarium section (hard to miss)
04:
Use railing to get this one (it’s so annoying)
05:
Push the glass cabinet to be able to solve this puzzle
06:
Hidden behind branch
07:
Hard one to miss
08:
Unmissable, need to toggle the light to get the energy orb (I think)
09:
Don’t remember this one
10:
Follow the rail
11:
Jump down from the room with chest#12 through the crack in the floor, hit the orbs in following sequence (if you want the combination it to the left part of a room with orbs, you have to do it without light present)
12:
Just climb the vines after taking an elevator
13:
Do a bit of parkour in a room with first day/night switch, beforehand move some platforms (or double jump ike a true chad to the chest)
14:
This one is behind a fake wall next to the elevator. It’s also an entrace to catacombs, which will be used in later part of a game, contains virus chip if I remember correctly
15:
Do a double jump from the left wall of the chest (like a true chad)
16:
You will need ice grenade to cross the fishing pond to get there, fight through enemies to get the chest
17:
There is one chest outside of a Museum area, but still I am counting it in. It’s in a courtyard, to the right of the Museum entrance:
Hopefuly rest of the chest can be found as easy as these (spoiler they are not)