Unlimited ammo:
     Beat  the  game  after collecting all eleven dino files. You will
then get the EPS platinum. You will have unlimited ammunition the next
time you play

Dino coliseum:
     Beat  the  game  to unlock the dino coliseum. There you can fight
against all the dinosaurs in a coliseum arena.

Buying characters in the dino coliseum:
     The  following  characters  and  dinosaurs  can  be  bought using
Extinct Points:

Rick                  100,000 pts
Gail                  100,000 pts
Tank                  120,000 pts
Oviraptor             150,000 pts
Velociraptor          150,000 pts
Inostrancevia         160,000 pts
Allosaurus            180,000 pts
Tyrannosaurus rex     150,000 pts
Triceratops           200,000 pts
Compsognathus         250,000 pts