Pretty fun, could use a few tweaks
I enjoy these types of games where you are the one facing the onslaught of crazy ass monsters and use skills and strategy to fend em off. I liked the difference in the classes with their unique active and passive skills. Like you said in a previous comment, the mage is the most powerful and I totally agree to the point of maybe being slightly broken. Did you mean for the mag's first level spell tornado to be generally spammable for a short while after you cast it? If so, it really should be a higher tier or have a longer cooldown. The bowman was a fine middle of the line class, who really excelled after getting more of the skills. The warrior I tried a few times but got defeated =(
Things I would change: First of all, you absolutely should include hotkeys for the skills, the levelups were simple enough to to need a hotkey or pause, really. Maybe give a timer to the individual skills to offer a little bit more strategy for the players. A few mini bosses before ginormo fatty wouldn't go amiss either. Good effort, this game has a strong base and interesting play that brings it above the run-of-the-mill protect the base game. I look forward to the sequel.
7/10 4/5