Finished this game recently. So as a redheaded girl, voiced by the same that did Tiny Tina, armed with a fancy spear and a bow, you fight robot dinosaurs and critters.
There's some big bastards in the later parts of the game. Like the Thunderjaw.
The Thunderjaw is the unholy hybrid of a double decker bus and a T-Rex. It's got heavy blasters on it's head, a somewhat potent spread laser, and these disc launchers on the hips that'll create a cloud of little drones that will then crash into the area near you and explode violently. This is on top of it chasing you, biting at you, stomping you, using the tail to bat you across the desert or jungle like a baseball. If you try to hide, it's got a radar system it'll use to ping and find your location. The only good news is they have somewhat fixed zones and won't chase you beyond a certain point. It has weak points, but they're tricky to get to, and it'll feel like you're trying to fire a crowbar through a compound bow.
The first time you fight one it will feel like hell. It's quite a rush.