Unlock Single and Surviver Modes:
Beat The Game On Easy with any character and whala.
Bonus characters:
Win battles using each dinosaur. Every other one will unlock a bonus character.
Exhibition mode:
Beat the game with eight regular and five bonus characters to unlock exhibition mode.
Bonus FMV sequence:
Beat the game with all fourteen characters to view a FMV sequence featuring dinosaurs.
Alternate appearance:
Successfully complete survival mode to unlock a appearance for the character that was used. Press Triangle at the character selection to change appearance.
Invulnerability:
Successfully complete survival mode without using any continues to unlock the "Invulnerability" option.
Hint:
To complete the game as rookie or normal dificulty mode easily, hold Down + Forward when the match 's about to start.
When "fight" appears, keep pressing Square (default), and subsiquently, press Triangle (default).
This should give you a Headstart, and every time your opponent falls, try hitting him or "jumping onto" him.
*The above hints work better on "Acro" or "T-rex", but still works quite well for other dinos too.
Alternate color for dinos:
Choose the dino by holding select and any button to choose it. Another way is to choose it using CIRCLE.
Easy win:
To win other dinos easily, press and hold Circle. Do this before "Fight" appeares.
When the match starts, press triangle and your dino will knock your enemy off his feet and bite him.
Then jump directly over your enemy and press Down + Trinagle. Your dino will slam into the enemy dino.
This whole move takes away abot 20% to 25% of your enemy depending on your dino's size.
Note: Never let go of Cirle until you complete the whole game, not match.
Grabbing and eating:
To grab a prey say a dog, man, sheep or compy, hold down and press X. To eat the prey after grabbing it, press down and X
Note: you must be standing directly infront of the prey. Your enemy can steal your prey if he bites you.
Special moves:
To do these hold one button and press another. Experiment on all the different combinations of buttons.
Also try to press directional buttons and then and action button.
Getting up:
When your dino is knocked to the ground, press the action buttons and it will get up.