Really fun well made game, gives me NES TLOZ vibes with a name that reminds me of Kid Icarus, it looks really nice and the controls are great, the potion making looks particularly fun but, I personally had a lot of problems to actually craft something since I kept on dying while I familiarized with the game. I get the "You must craft to survive" but I felt it was kinda hard to actually make some since melee attacking puts you directly on the danger zone and the hit boxes are kinda hard to learn.
I still enjoyed the game a lot but my suggestions would be maybe make a ranged attack that doesn't run out like bones, maybe throwing vials that refill when you go to brew something, and maybe the option to save your crafting materials in the brewing spot, that way you create a gameplay loop when you farm until you run out of vials and go back to save your crafting materials, refill vials and craft potions.
Of course this is just a suggestion, I am sure for more skilled people than me the game is fine as it is.
PS: Did not manage to try the level making stuff but it sounds like a super cool idea to add replayability.