Here is the full list of all 32 Primal Carnage: Extinction trophies - there are 16 bronze, 9 silver, 6 gold and 1 platinum.
Collect every Trophy
Find all of the Primal Cornage cereal boxes
Complete Wave 20 in a survival match
Kill 1000 dinosaurs
As a human, successfully escape in a 'Get to the Chopper' match
Slay 100 Tyrants
Complete Wave 10 in a survival match
Unleash the hound
Purchase a throwable item in a survival match
Unlock a gate in a survival match
Complete Wave 5 in a survival match
As the Pyro, kill 15 dinosaurs with the flamethrower without dying
Fully heal from a near-death encounter
As a Pteranodon, kill 15 humans with dropped Pyros
As a Carnotaurus, hit 5 people in a single charge
As the Acrocanthosaurus, launch 5 humans with a single stomp
As a Predator, pounce a human from a great distance
As the Commando, kill a Tyrannosaurus with the Desert Eagle
Kill a Dilophosaurus while blinded
As the Pathfinder, make a killing blow with the hatchet
As the Pyro, kill a Tyrant with the chainsaw
As the Pteranodon, catch a human dropped by another Pteranodon
As the Scientist, reveal 25 dinosaurs with sensor mines
As the Scientist, bring down a Tyrant with tranquilizers
Kill 3 Acrocanthosaurus
As the Scientist, use both your primary and secondary weapons to kill a dinosaur
As the Scientist, kill a dinosaur from behind
As any of the Tyrants, devour each one of the human classes
As the Tyrannosaurus, kill 5 humans without dying
As the Dilophosaurus, enter the 'Dilo Clubhouse'
As a Pteranodon, kill 5 humans without taking damage
Play Primal Carnage