Here is the full list of all 19 KByte achievements.
Complete your first level
Complete every level of The Factory
Play a level in evey World
Complete every level of The Ancient Ruins
Complete every level of The Fort
Complete every level of The Tower
Complete every level The Volcano
Complete every level of The Blue Cave
Complete every level of The Sea of Clouds
Complete every level of The Laboratory
Grab your first collectible.
Grab 16 Collectibles.
Grab all 32 Collectibles
Beat the Boss
100% Game Completion
50% Game Completion
Score of 100 points in Watch
Grab 8 Collectibles
Unlock and play with G-Byte