I'm sure I'm not alone in thinking Elden Ring: Shadow of the Erdtree's final boss is the hardest fight in the entire action RPG, and one unlucky player getting killed before even entering the room is pretty solid proof of that. Beware, there are spoilers ahead for the final fight of the DLC.
Promised Consort Radahn is an absolute menace. Right from the moment you enter the arena, he tends to launch himself at you with a massive flying strike, which also causes a load of spikes to erupt from the ground in a radius around him, dealing damage if you're too close. It's this move that Reddit user davidoff-sensei was first met with upon being summoned into another player's game to help them with the boss, while simply trying to enter the fog gate to assist. Unfortunately though, their woes didn't end there.
