The game is fun, and I think graphics are decent. Main problem is the lag you get when firing off a max leveled bow with 4 extra arrows additionally while in a boss battle with flying skulls and stuff everywhere.
The flying skulls are kinda annoying as the only way to get rid of them is to be hit by them or go in circles and hope they hit a wall. Perhaps make it so you can circle around and make casters hit themselves with their own spells.
As mentioned before, weapon switching is awkward, using q and e can remedy the problem.
Not much skill is involved, most of my gameplay consisted of running at enemies slashing, obliterating the rooms with the potions, or trying to use arrows at low health. There should be a difficulty setting.