Thank you for play! I have save button inside system menu which I forget mention in my description. My cousin also have difficult to fight with first boss so I actually put that boss in tutorial for all the player to enjoy the fight when you have all abilities :) . Physics is the thing I keep trying to get better during whole jam period but it also little bit hard to get perfect balance between 3D(2.5D) animation and player control. My cousin and I play ur game and very enjoy on it authentic metroidvania style, and same as my cousin we all die when fight with spider boss.......several times lol