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 "Crazy Otto". 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
Big Lard Ringer	Eat six dinosaurs with one crazy pill.
Can't Make An Omelette	Eat Baby Otto.
Chipmunk	Eat four dinosaurs with one crazy pill.
Duck Soup	Eat Otto.
Duckling Soup	Eat Otto Jr.
I've Been Around	Play each of the 25 levels.
Ms Duck Soup	Eat Ms Otto.
Om Nom Nom	Eat one of each dinosaur.
Om Nom	Eat a dinosaur.
Titanic Team Up!	Play in multiplayer mode.
Two Tribes	Play an eight player game.