thanks to U for your tips. i'm NOT a real developer, i'm mainly a pixel artist. but during jam our developer had problems at home and had quit the jam, so the last month with my knowledges in GameMakerStudio I set the game, the mechanics, the level design and this is the result. i know lacks in enemy AI and in character movements. difficult are high i know but i've set the % of drop healing and stamina from enemies at an highest value ( about 45-66% on death). so today i try to create a video playing full game in the 1.5.5 version to understand in a better way your opinions. very thanks again