Titans and Hunters are getting a few changes among the pile of others that Destiny 2's upcoming sandbox shift will bring, allowing some abilities to one-shot in PvP while others will no longer be able to do it.
Titan shoulder charge has been a staple of the crayon crew ever since the first Destiny, where it could also one-shot enemy Guardians. Destiny 2 came and the charge couldn't delete people anymore but due to popular demand, the one-shot capabilities were restored. However, the December 7, 2021, sandbox update will once again neuter the Titans' melee abiltiies.
They will be activated slightly faster, making it harder for targets to dodge or escape them, especially because the range has been increased and now roughly matches that of the shotguns. On the flipside, the damage was nerfed in PvP and will no longer be able to delete players.
Seismic Strike from the Arc tree will now blind enemies hit, making it still highly useful but the Void and Solar versions of the shoulder charge will only get nerfs.
Still, if you want to one-shot enemies with the shoulder change, you can try running Peregrine Greaves which increase the damage of the ability. It remains to be seen whether this Exotic will allow Guardians to drop Super-enhanced enemies in one hit though.
Meanwhile, Arcstrider Hunters will now be able to one-shot enemies with their Flux grenade. It will need to attach to a Guardian properly, which is challenging due to the high speed of Destiny 2 PvP but landing the throw will feel much more rewarding. Missing the throw will also feel much more punishing as well because the cooldown time has been increased to 180 seconds.