really neat game. I like the music but some issues i have is that you have to let go of the key to walk the same direction again (but that might just be how the game is), and you should also make the gun point towards the mouse so that you don't have to walk towards the dinosaurs to shoot them. Other than that, very cool game!
P.S. I think it would be cool if you added screen shake whenever you shoot a dinosaur :)