Nice. Would appreciate some info about the enemies, though. On the pre-battle screen, where you show the enemy units and skills, give me info when I mouseover their units.
Please give a reset option for upgrades. You can't grind old levels, so you can get stuck if you pick bad upgrades. (Also please let us sell / destroy buildings, and add space bar for pause.) Nice game otherwise, thanks for making it!
"Attack with 12 swordsmen." That's great, but how much damage does it actually do? Could be a really good game with some polishing, though. (And don't feel bad that you're getting lots of criticism -- it means we want to play your game. People don't bother with feedback for bad games.)
Fun. Victory screen should be faster / skippable. "Next" button should go to next level, not level select. FB button is too easy to accidentally click, since it's where "Next" normally is. (Is that intentional?)
not me, thanks for attention anyway.