Nice game ! just 2 points:
- Skill are useless for me (i finished the hard mode with full passive skill gold/loot and lvl 3 speed) and mana regen and/or mana cost dont match, something need to be fixed to be usefull i guess and by the way, a life regen passif maybe can be fun :)
- Hard mode is... easier than normal mode! like i said, i finished HM with full gold/loot.... no skill just auto attack and no buff life/dmg needed... and i dont even loose once a mission in HM (well 2 final boss were hard finally :P) ! in normal mode i respected a lot of time to full buff/skill to defeat some boss that was a nice gameplay. Difficulty have to be changed
By the way, both 2 points are already know by the dev i guess :P