I just played a few rounds of this with Masaiko and ArnoldusThe Great - this game is FUN! I recommend everyone to try and buddy up on the GMTK discord to play this gem.
It focuses on the main mechanic (time without your skull), and sticks to a clean and simple fighting system - really good design!
(if anyone reading the comments does want to buddy up on the GMTK discord, I've made a list of loads of other awesome multiplayer games too https://docs.google.com/spreadsheets/d/1dJjbKhlp9DG-rSVq9ytHtBBC0Y5SHTXDNx1sk-iaSIk/edit#gid=0 )