So I played the game on normal and got most of the way through, but my save file got deleted. I therefore started over but decided to play it on Hard. I've now beaten the game on Hard mode and collected 100% of all the collectables. All challenge modes have been unlocked. My character has ALL of the upgrades available. Last night I began the combat challenges and I've run into a problem. When I played the campaign on Normal I would get a screen prompt to hit A+X or B+Y to perform a throw or combo takedown. I realize those prompts go away when on Hard mode, but even though I've unlocked those abilities, I can't seem to use them. I didn't notice it in the later stages of the game because I was basically spamming the strike and counter buttons, but they're really important moves in the challenge mode. Is there something I'm doing wrong? Thanks!