I got pretty far! I can't continue further, so... I think I won?
Very reminiscent of Downwell, but I like how you simplified the game even further. (With the dual mechanics and all, just removing the person character altogether and just being a gun. It's pretty funny.)
As others have pointed out, I could go out of bounds and that made it pretty easy. But also, the Rogue upgrade seemed to be disadvantageous period. Perhaps it's good at the beginning, but I really decreases your killing capabilities at the very end.
Fun game! 
I'm sure you've been requested to play many other games, but CTRL ALT Defeat is one my friends made. You should check it out!