TheXbox One controls are Right Trigger for Swimming Faster & hold B to Dive. I honestly don't know as I've never used any PS Controllers, but I would assume the Dive button while swimming would be the same button that you use to Crouch when you are on Land. AC4 doesn't have a crouch button and you also can't dive. no this is not playstyle for Assasins creed. Walk throw crowd and killing with stab then hide in the bushes. But please don't try crouching by the walls. i'm begging you xD. #9. Jacob. Oct 3, 2014 @ 1:11am. is ac4 a stelth game really. #10. LeadStarDude Oct 3, 2014 @ 8:25am. Assassins Creed IV: Black Flag BridgeBurner86 10 years ago #1 im trying to get 100% and every time i try to "tackle" the thief i end up close lining him and knocking him straight out, but its not counting it as a tackle. NavalCombat is a complex affair in Assassin's Creed IV, with many weapons, tough enemies and complicated upgrade system. Once you get a handle on nbofCc.