Not bad, but could use some more features and fix ups.
-Soul Powerup should be removed (damages yourself and players, pointless and annoying, also annoying have to watch the same thing over and over).
-With souls you should be able to buy more units to put on the field by clickin on your main unit by making the menu coming up. Then clickin on "Buy Unit" and with the souls you could purchase units.
-More maps to fight on, instead of just black and white board.
-Show the levels of your units.
-Make units have levels Capped to level 5 and abilites are not every level.
-Recheck units and fix up some balancement.
Fun game! Great work, but needs more for some action!