A buddy of mine that I started playing on this server with beat the story mode with me. We then decided for shits and giggles to try ruins on Hard Mode immediately after and see if we could beat Dark Falz and the dungeon as a whole (we're newer players so we're geared like ass and kinda play like ass too). We made it all the way to Dark Falz on our first attempt, and we beat Phase 2, thinking that was the end. We started cheering, only for DF to turn into his Phase 3 form and seriously fuck us up, as we had no light resistance to combat his Grant attack. It was 4am when we finally ran out of reviving items and healing items and had to jump ship.
We then left the lobby, but then we were talking to each other and realized that we had come so damn close, and we wanted to go all the way, tonight! Did we have work in the morning? Hell yeah! But that didn't stop us from farming out some resist/light armor/shields and modules for our armor. Finally, we made it back to the end. With better weapons, better armor, better strategy and more determination than ever. Then, as the clock struck 6am, we finally felled Dark Falz' final form! It was awesome, can't remember the last time I was that obsessed or determined to do something in a game.
Definitely isn't some sort of major accomplishment in the grand scheme of things, but man oh man does it feel super sweet.