Can anyone give me some helpfull consejos on something?

Here is the headline: I have just started playing this classical video game for the playstation called "Warpath Jurassic Park". And I am having the slightest troule with something.

One of the little exclusives tu have to unlock is por completing "survival" mode and win through it all. My proublem is that no matter how hard I try to play it my way I keep on loosing and it's very frustrating plus irrtating.

My pregunta is that if any of tu out there played o still plays this game could tu give me some helpfull hints o consejos on how to win?