Complete each condition to get the allotted achievements.

Achievement	How to unlock
Aluminum Cell	Finish the Cell stage on Hard difficulty.
Cell Addict	Finish the Cell stage 25 times.
Completist	Unlock all the parts in Cell stage.
Creature Stage Unlocked	Play enough of the Cell stage to unlock the Creature stage.
Landfall	Finish the Cell stage and clamber onto the planet's surface.
Pacifist	Finish the Cell stage without killing another creature.
Speedfreak	Finish the Cell stage in under 8 minutes.