Kingdom Rush Vengeance Impossible Hero Challenge - 34. The Lost Empire Iron - Grosh

Part of my Impossible Hero Challenge for Kingdom Rush Vengeance, where I do every map in every mode (campaign, heroic, and iron) with every hero on Impossible difficulty, with No Lives Lost in campaign mode. All heroes are level 10 and all upgrades are applied. This is the Steam version, but I'm only using towers that are free in the mobile version so that it's applicable for players there as well.

Check out the associated blog post for hero grades and commentary: