btw to those playing this game for the first time I'd recommend getting the fingerband to level 25, then you can unlock a "Hold down the mouse to rapid fire" ability.
I can't seem to unlock rebirths? I can see on the miniboss victory screen that I earned a rebirth token (yellow token with R) but nothing increments on my side.
 "Grow Defense"){kind=icon}
 "Burrito Bison: Launcha Libre"){kind=icon}