5/5 reminds me of the Gladius games, if anyone here is old enough to remember those. Nightguard, try lowering the game quality in the pause menu, that will stop the lag a bit.
I love RPGs like these, but this one was way too easy. I beat it in two days with a Royal Knight. Never used a potion, never died, never used any spells besides the assault and faction ones.
Way too easy, I got up to level 82 before killing myself from boredom. Fun idea though and it would be even better if you made more options for drawing and more upgrades. Also different missions or objectives would be cool.