I though I left a comment here 2 days ago, but I guess I didn't post it xD
I've loved this one, its reeeeally fresh, you did a good work with those arm kinematics, funny and clunky, I would suggest to give a little zoom out, and to make some obstacles for the arm so we have to "think" a little more, at a time I was just swinging the chainsaw like a beast and slaughtering those bugs even before they entered the screen.
very satisfying game, congrats on the freshness!! :)