I audibly went "THIS HAS SYNERGIES!?!?" the moment I got a full-auto shotgun via RNG
idk if what I'm gonna say is a bug or just you not being able to implement an ending
(wich you shouldn't, you should just keep it infinite)
my loadout was the shotgun upgrade, and the full auto-upgrade + 50 bubbles, with the damage up and +5 bubbles, then I got the red upgrade that said ???
and when the boss came out I sprayed him and then he disappeared with a silver of HP so I'm gonna assume I shot him too strongly causing him to get launched into the 7th dimension,
incredibly impressive for a 3-day jam and you should keep updating it