Kill all the Animal Types
There are a total of 12 animal types in the game. You can find their locations by pressing and finding their symbols on the map. Furthermore, you will discover almost all of the animal types by simply completing Predator Path Quests, as they involve killing a more powerful version of a certain animal. The only animal that does not have its own map symbol or Predator Path Quest is the Neon Snake. These appear in random locations (usually near the temple ruins where you find the TV's) and latch onto your arm. Simply knife or shoot them when you shake them off.

You can check which ones you have already killed by pressing and then selecting 'Data Console'. From here, tab across using to "Collectables" and then "Animals." Here's a list of all 12 animal types:


Black/White Tiger
Blood Dragon
Boar
Cyber-Panther
Cyber-Shark
Devil Goat
Mutant Buffalo
Mutated Cassowary
Mutated Turtle
Neon Snake
Robo-Croc
Robo-Dog