Apocalypse wasn't even that impressive in AoA. He was beating up on Magneto who wasn't really defending himself, and then Mags ripped Apoc in half. I think flashbacks showed Apoc did well to remove his rivals early on through planning and preemptive strikes.
The most impressive I can remember is in Xcutioner's song when he fought Storm, Beast, Colossus, and Gambit I think, and he took them out in 3 pages. Then he took on the Dark Riders off-panel. He didn't do anything in Blood of Apocalypse that I can recall.
He's a big talker with an impressive name that made a good impression during his appearances in X-Factor, but he hasn't do anything else really memorable other than X-Men remarking that Poccy-Lips is really dangerous.
Edit: He wrestled Hulk down Onslaught. So 1 thing.