On the 2nd and 5th stages, there appears a large dinosaur called a Shivat that's sleeping when first encountered. Try to keep the human enemies from whacking them to wake them up. While the Shivats do attack the enemies, they can also cause trouble (and injuries) for the players.

There are also some pterodactyl-like flying creatures that need to be struck by jumping to reach them. Whenever you drain the energy from any menacing dinosaurs, they slightly change color, then become harmless.

On the 3rd stage, where you're driving Jack's Cadillac, try to dodge the grenades thrown by the stage's motorcycle-riding boss, Hogg, while crashing into him with the car. If you're good at this, you should be able to at least reduce his energy to the yellow level, the lowest for the enemies.

On the 6th stage, there's 2 points at where you need to be careful not to be stomped on by the legs of a brontosaurus. But, try to lure some of the other enemies underneath them instead!