Batman: Arkham Knight (PS4) - corner cover zipping

Playing this game is like meeting an old friend! Corner cover zipping is a classic glitch that existed in both Asylum and City, and well, I'm glad it exists in Knight too. It just wouldn't be a fitting epic conclusion to Batman's tale without a lot of zipping. Corner zipping as simple as this. Start covering with batarang as your active weapon. Start aiming and throw a single batarang, but right after the animation starts let go of aim and press a non-standard exit button (on PS4 this means either square or circle, NOT X). Then, fairly quickly, before Batman stops crouching, start aiming again. Batman should resume aiming while separate from the wall, and you know what that means... The next time you toss a rang, it makes Batman fly towards the universal direction instead of the cover. The universal direction is a fixed direction that varies a bit in each area, so it's not like you can exactly control the zip, but you can still harness its power by planning ahead and trying out where the zips tend to take Batman in each area. Warning: occasionally doing zips in this game can crash it. Seems to be location specific. Loading the game can also alter where Batman becomes zipped, messing things up further. I think zipping can be used as a speedrun tactic as usual, just have to be a bit careful.