Press Q for the boss. if you haven't selected a difficulty before the boss, it will end automatically. E key = easy M key = medium H key = hard 1 key = normal gun 2 key = bombs 3 key = minigun 4 key = laser you need to kill the boss 2 times for the bombs, I think like 5 for the minigun, and 10 for the laser I think. check the code for the actual amount of boss kills 5 key = cookie, heals 0.15 HP. 6 key = cider, heals 0.4 HP 7 key = spaghetti, heals 0.55 HP
Thanks to 09littlebendygaming for deltarune boss music: https://scratch.mit.edu/projects/620680813/ edit: glitch in the game, if you are playing for more than 3 minutes the boss and you will run out of bullets for some reason. this glitch only happens when minigun is equipped.