Here is the full list of all 19 LOVE achievements.
You only live once.
You only live 999 times.
Beat the game in Speedrun Mode in under 12 Minutes
Get an A++ Rank
Beat Level 8 without meeting an untimely demise.
Get a C Rank or Better
Get a B Rank or Better
Get an A Rank or Better
Submitted Speedrun Score to the Steam Leaderboards
Stay clean while making your way through Level 6
Beat the game on Normal or Better
Find the secret hidden in the depths of the Slow Tube
Successfully take the Level 3 Shortcut without dying
Take the most efficient path through Level 2 without dying
Placed 250 Respawn Points
Took the lower path on Level 10.
Took the higher path on Level 10.
Bounce 60 Times
Climbed a Machine in India