Heya! Wanted to say that I really like the game! A lot of it feels good (animations, general movement). Small bug I noticed is that I can type in the cutscene text, which I suspect is unintended. Apart from that in some cases (in the tutorial section fe.) there was a building that I thought I had to climb / jump up against, but when running against it I found out it was a background structure, this could probably be clarified a bit more.
Last and most important is that I'd highly recommend looking into coyote-time / coyote-jumping, from the playtesting I felt like that wasn't implemented yet. This video from GameMakersToolKit covers it in the "Player Forgiveness" section (9:29)