I enjoyed your game, but I would suggest some improvements:
· A button to make animations faster (this is always really appreciated).
· A button to skip dialogs (specially on the 4th boss).
· Make stunned enemy attack cooldowns be reset to 0.
· Make regeneration skill progressive (instead of instantly heal).
· Randomize monster stats a bit.
· Armor should give HP instead of attack speed (you could create a new item, like boots, to increase attack speed), and the shield text could be replaced with "Reduce incoming attack damage by X amount", so you wouldn't take any damage from weak enemies.
I encourage you to keep going, Tanfor, good work overall.