Here is the full list of all 31 Until I Have You achievements.
Purchase any of the upgrades.
Achieve the lowest ranking possible.
Die 1000 Times.
Finish Boss Mode in Hardcore Difficulty.
Finish Boss Mode in Normal Difficulty.
Kill 100 Enemies using the Laser.
Kill Emily's mirage in all its appearances.
Beat the game in Hard Mode
Get a 100% Rating in all the stages.
Finish the game.
Unlock all older work orders.
Kill 1000 Enemies.
Kill 100 Enemies using the Flamethrower.
Kill all the enemies, using the FLAMETHROWER.
Complete a stage in Chapter Eight with the ALARM going off.
Kill 100 Enemies using the Gun.
Kill an enemy while hysteria is high.
Kill all the enemies, using the LASER.
Kill 100 Enemies using the Bat.
Unlock any of the work orders.
Complete a Boss Stage without using Time-Dilation.
Achieve 100% accuracy with the GUN.
Kill all the enemies, using the BAT.
Kill all the enemies in a stage.
Kill all the enemies, using the GUN.
Complete a stage without killing anyone.
Complete a level earning the Second To None Rank.
Get a 100% Rating in any stage.
Head out of the apartment.
Watch TV.
Complete Tutorial.