Here is the full list of all 14 Derrick the Deathfin achievements.
Complete the Arctic zone
Complete all the levels in the game
Collect all the objects in the game
Get gold medals in all possible levels
Finish level with Derrick in reverse
Complete the Asian zone
Complete the African zone
Finish level in the air with Derrick in reverse
Get a gold medal in a speed level
Complete the American zone
Get a gold medal
Eat a flock of birds
Eat 100 creatures in a level
Collect all the objects in a level