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