I had to force myself to stop playing your game to try the next ones, it's simply addictive!
Eventually, I had an army of ogres with double axes, full plates, and diamond rings. If there were more ways to upgrade, I would definitely keep playing!
Being nitpicky, I felt that the game lacked a bit of challenge; at no point did I feel afraid for my minions, since it was easy to do the missions with 100% success.
That said, I loved it. Congrats on the game! If you make an update in the future, let me know!