Going to make a list of bugs I found during my experience with the game:
1)If you open the game with the client in the game folder "Warhammer_x64_11" (E:\Games\Warhammer 40k\steamapps\common\Warhammer 40,000 Inquisitor - Martyr) the game will open up but you will receive only "Network Error" all the time.
2)When i shot a contain while moving the angle of the screen the game froze it seems to happen due to massive frame drop (im using 970GTX and I was on max graphics.)
3)Balthar's eye Assassination quest made the game crash the first time I opened it.
4)When you click on "Start Mission" the chat box just appears next to the mission tab.
5)The chat box sometimes does not show the new messages in the chat or it will show the second new message every time.
6)I encountered couple of times mobs that had 11 hp and I shot them i shows 10 dmg and they died , not that i actually do 10 dmg I hit them with 60 but it will show only 10 due to their health.
7)Plague Mariner just bugged out and stood still doing nothing.
8)Plague Barrier some of them just generate health in insane rate.
9)Can't click on the "Close" button in the skill tab I had to change to Heroic Deeds in order to close it.
10)When I activated the "Window mode (Border-less) " The border-less effect did not work till I restarted the game (the game still minimized every time i click on a program on the second screen)
After I killed the mob instead of falling down or exploding it just got stuck like that and the mob can still block shots even though he is dead.
I could climb that weird vent and the movement would look weird but it didn't actually let me climb up to the higher platform I just could go up and down on it.
13)Some pictures can't be uploaded to the post it just says "Something went wrong , Try again" even if I upload the same picture with a URL.
14)The big red robot in Assassination quest 2 bugs:
A)It got stuck behind a pillar and Could not move anymore (Couldn't upload the pic)
B) When i shot his shield barrier the game crashed I used the pistol assault rifle type.
15)I could move inside a pipe (Couldn't upload the pic)
16)I equipped new weapons but when I entered a mission I still had my old weapon , Only after I sold that weapon it let me use the new ones.
17)Can't unequipped weapons
18)I received items from a mission I finished it showed me the loot when I returned to "Town" but after it they weren't in my inventory.
I hope this is useful!