Follow the indicated steps to earn the corresponding Steam achievement. To view your achievement progress and stats, open the Steam client, select "Community", then search for the game hub for "Jelly Killer (PC)". Click the "View Stats" option in the drop down list, then select the option that displays the achievements for your account.

Achievement	How to unlock
Boom	To destroy 16 hazards holding control over a guardian.
Deadly Pipes	To enter a pipe holding control of a human being.
Do All Five	To take in all the five characters' bodies.
Extermination	Kill a human with a rifle.
First Blood	To escape a human body for the first time.
Green Splatter	To die 32 times.
Groundhog Day	To die 4 times at the same place.
Headshot	To get 8 headshots from turrets.
I am a General	The quickest way to become a general.
Impaled	To be impaled 32 times holding human body under control.
Killing Spree	To destroy a body 32 times being close to the exit.
Mission Complete	To complete the game.
Oops	Unknown.
Teleportation	Unknown.
Training Wheels	To complete training.
Wrong Place	Unknown.