Wow, I sunk about 2 hours into this, it was pretty fun. The loot loop was nice and I decided to max out my move speed.
I didn't know that you lost your mutagens when you died, so when I was at spawn just playing around I actually asked someone to kill me because of some health / healing bugs and lost all but two of my orange balls. That experience was seriously not fun, and I gave my last ones away and gave up.