Here is the full list of all 25 Ant-gravity: Tinys Adventure achievements.
Defeat Crab Boss without using the Helmet and Cannon
Complete World 5 - Empirical Workshop
Defeat the Final Boss rotating the gravity 6 times or less
Use an improvised vehicle
Complete World 4 - Shooting Shore
Complete World 3 - Crafty Jungle
Defeat Blowfly Boss without breaking its shield
Complete World 2 - Sharp Desert
Defeat Flea Boss in 30 seconds or less
Complete World 1 - Discovery Den
Defeat Mantis Boss without using extra ants
Complete all stages
Complete 100% in all stages
It is not impossible
Use the Iframes to find a way in
\[T]/
It is your companion
Complete Stage 3-4 in 41 seconds or less
It seems hostile, but it helps you
Find a shortcut in Stage 4-11
Find the secret party of great games
Release the enemies, run for your life and survive
Complete the game with no dead bodies
Complete the game in 1 hour or less
Complete the game in 3 hours or less