Here is the full list of all 20 Agent in Depth achievements.
Die 10 times in one session.
Clear Floor 1.
Reach X3 Score Multiplier.
Clear Floor 2.
Clear Floor 3.
Clear Floor 4.
Finish the game, to play it all over again!
Die 50 times in one session.
Die 100 times in one session!
Finish the game under 5 minutes!
Finish the game under 10 minutes.
Finish the game under 15 minutes.
Finish the game with at least 25k Score.
Finish the game with at least 50k Score.
Finish the game with at least 100k Score!
Reach X6 Score Multiplier.
Reach X9 Score Multiplier!
Who needs Alt+F4?
Get killed by a white bullet.
Blow up a turret with a white bullet.