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Unlockable - Iron Man Mark II Armor / Hard Mode
Once you have completed all 10 levels, you unlock Hard Mode, which you play wearing the Mark II Armor (the silver one, before he adds the color). At the level select screen in the upper right corner is where you choose the difficulty
Iron Man Mark II Armor / Hard Mode - Completed all 10 levels

Embark on an inspiring mission of human connection beyond the UCA. Sam — with companions by his side — sets out on a new journey to save humanity from extinction. Join them as they traverse a world beset by otherworldly enemies, obstacles and a haunting question: should we have connected?