A riposte from the front ? Are you talking about the L2 parade or the shield break (when your stamina bar is fully drained after a shield block) ? Both can be chained with a simple R1 hit for massive damages.PvP blows when ping is awful, hitboxes suck and my hits (which on my screen clearly hit) don't register. I thought joining the Bell Covenant would be fun for some jolly PvP, lawl. Of course the opponents are so used to it they can exploit ping to their advantage? IDK. Hell you're best off using some heavy-ass weapon 1 handed, stun lock and riposte, instant kill since hitboxes are so messed
EDIT: Does someone have a recommendation for a PVP build, I have no idea how these guys do that move that allow a riposte from the front...
And you couldn't be more wrong about heavy-ass weapons in PVP, most of the time they are so slow that you won't manage to connect a second hit, if you're even able to land the first one that is.
The best pvp weapons are the fast ones, especially with DSII's fucked up useless poise system. The rapier or the estoc can stunlock really easily, same with the cestus. One of the most dangerous weapons I witnessed in my early bellbro invasions was the fire longsword : somewhat fast swings and good damage.