yeahhhh, we made it tricky just as its a game jam, if we develop it further well make some easier bosses leadin up to it and include upgrades for the player
no I mean in the boss battle they move so fast that my monitor doesn't see them with my crappy refresh rate so to me it looks like the boss battle bullets teleport behind me, bounce on the wall and kill me
You can just cheese it by destroying one of the enemy boxes, destroying the enemy, and coming in close proximity to the boss and shooting through the opening.