Here is the full list of all 31 Until I Have You achievements.
Achieve the lowest ranking possible.
Die 1000 Times.
Kill 1000 Enemies.
Kill 100 Enemies using the Gun.
Kill 100 Enemies using the Laser.
Finish Boss Mode in Normal Difficulty.
Kill 100 Enemies using the Flamethrower.
Finish Boss Mode in Hardcore Difficulty.
Get a 100% Rating in all the stages.
Finish the game.
Beat the game in Hard Mode
Kill all the enemies, using the GUN.
Unlock all older work orders.
Kill Emily's mirage in all its appearances.
Achieve 100% accuracy with the GUN.
Kill all the enemies, using the FLAMETHROWER.
Complete a stage in Chapter Eight with the ALARM going off.
Complete a Boss Stage without using Time-Dilation.
Kill 100 Enemies using the Bat.
Complete a stage without killing anyone.
Kill an enemy while hysteria is high.
Kill all the enemies, using the LASER.
Unlock any of the work orders.
Kill all the enemies in a stage.
Kill all the enemies, using the BAT.
Purchase any of the upgrades.
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.