Here is the full list of all 49 LAETUS. achievements.
The base game contains 23 achievements, and there is 1 DLC pack containing 26 achievements.
BEAT LEVEL 5.
BEAT LEVEL 10.
BEAT LEVEL 15.
CHECK THE CREDITS!
BEAT A DEVTIME.
BEAT 5 DEV TIMES.
BEAT 15 DEVTIMES.
JUMP 5000 TIMES
DIE 2000 TIMES
BEAT THE PRECISION PACK.
BEAT THE SPEED PACK.
BEAT THE RAPID PACK.
USE 100 JUMP ORBS.
COLLECT 15 COINS.
COLLECT 50 COINS.
COLLECT 105 COINS.
USE THE SHADED ABILITY 200 TIMES.
USE 100 BUTTONS.
BEAT ALL SHADED LEVELS.
BEAT ALL SHADED DEVTIMES.
BEAT "YOUR EYES".
BEAT "ECHOED REALITY".
BEAT "CLONED DISTORTION".