The thing I love about this show is that Arino is so likable. No matter what happens, he just jokes along and says "aww, game over." I can root for a guy like that. It's a million times better than the Angry Nintendo Nerd impotently screeching at NES games and acting like he can't even figure out what the jump button is for.
I just love the fact that there IS a washing button so much. I'd probably get killed dozens of times because I was too busy enjoying the washing button.
But I wouldn't care. Somehow I'd figure out a way to beat the game using only windshield washing. Maybe if I go right up to an enemy and wash my windshield at him, he'll take it as a metaphor for how absurd war is to begin with. Or maybe he'll be touched that I choose to keep my mech clean when I could be trying to kill him. Either way, I'm going to bring about world peace in this damn game using the windshield washer. You just watch.