Here is the full list of all 15 Deadly Tropics achievements.
Start a game
Die for the first time
Kill 10 zombies
Kill 50 zombies
Kill 70 zombies
Kill zombies by headshot 5 times
Kill zombies by headshot 20 times
Kill zombies by headshot 50 times
Smash 10 zomies heads
Smash 20 zomies heads
Smash 50 zomies heads
Kill 10 zombies using a knife
Kill 50 zombies using a knife
Kill 80 zombies using a knife
Finish the game