Fun game. Wish there was a way to speed up combat without ignoring special effects (does it ignore them? seems like it doesn't but says it does?).
Winning in the same round that you lose counts it as a loss, even if you "win" before you run out of health.
Could be clearer that units can only be upgraded once. Thought I could upgrade more than once somehow.
And having to click on "yourself" at times was confusing because they are only shaking and it doesn't indicate what to do to upgrade your tier.
Either way, great job!