Originally Posted by einstein_314
I think it would be reasonably easy to beat the game with only the blue gravity gun. Although, on second thought, it may be a challenge. I don't think you can kill the striders with it though so it would be impossible. And like Saturnotaku said, it screws up stuff in the game.
killin striders with that gun is a piece of cake... evidence == latter levels...
would be too easy...
I woulda much rather preferred playing the whole game with a shotty and a pistol