Kinda hard to believe i've been on the Internet since 2009 and i haven't even discovered this game. And it's still really good. Every weapon hits hard and feels amazing (except the Rebound Shotgun, that one sucks dick through a silly straw, and i'll never use it for non-achievement purposes.), especially with the gore effects.
HINT: If the game doesn't start, collapse and expand the page a few times until the PLAY button appears.
EDIT: got all medals, drop booyahs in chat