I cannot stress how much I love this game the combat is so fluid I beat the dungeon no spells hitless but I did find 3 bugs which is expected from a demo
bug 1: when you reload a room the enemies change in the dungeon I interpret this as a bug because well it would not be the greatest feature you can easily abuse this so you for example only have to fight slimes and bats
bug 2: with the bomb and arrow when you use it the bomb does not go on charge I interpret this as a bug as you can not use bomb arrow when the bomb is on charge
bug 3: if you charge the bow then switch to your sword the bow stays charged till you have your mouse off the charge button when the bow is selected I think this bug could be adapted into a feature if you made it so even if you let go of the mouse button when on your sword the bow still fires the reason I think it should be adapted into a feature is because it can be interesting to apply a bomb to your arrow this way
oh yea and for the hp thing I would love to see death implemented if you are looking for a good hp number I would say 100 if you want the game to be on the simple I can go through every dungeon first try or 50 if you want it to be hard but still very casual and if you are planning to keep it hard 25 is a great number