This is insanely Similar to Clicker Heroes. The name, the number of monsters per levels, a Boss every 5 levels, upgrades at 1-25-50-75, achievements that gives dps bonuses, Active abilities with cooldowns, Time Cubes(Souls) after level 100, exactly the same thing.
If it wasn't almost a copy/paste of Clicker Heroes, I would have been very impressed, because the game is really fluid and interesting... At least you've added new mechanics like multiple-hits and stuff... I hope you change stuff around at some point.
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