The easiest way to get to the boss was just to run without throwing any potions. I dies a few times without having no idea what actually happened (some kind of timed potion? Couldn't tell ya...)
Got a crash (on death I think):
___________________________________________ ############################################################################################ FATAL ERROR in action number 1 of Step Event0 for object obj_player: Variable obj_textbox.message_current(100037, -2147483648) not set before reading it. at gml_Script_textbox ############################################################################################ -------------------------------------------------------------------------------------------- stack frame is gml_Script_textbox (line -1) gml_Object_obj_player_Step_0