Endless Abyss has no floor cap: every level hides a red gate deeper, there is no shrinking darkness, and the exit stays open so you can bank the run any time.
Endless Abyss is a run tier with no floor limit. Every level keeps a red gate to the next one, so the run ends when you decide it ends — or when you die.
Past the fourth floor, monster health and damage keep compounding with depth, and depth pays you back: gold and experience scale with how far down you are, and the loot rarity floor rises one tier every four extra floors (capped at epic — legendaries still come only from bosses and treasures). Each deep floor is held by an endgame boss, so the descent reads as a chain of boss fights rather than a clear-the-map crawl.
There is no shrinking darkness down here, and the blue extraction gate is open from the moment you land. Sweep a whole floor or leave the second you arrive — the only reason to stop is deciding your bag is heavy enough. Death still drops everything you carry; the rules are in the beginner guide.
The week's abyss is generated from a weekly seed and is the same dungeon for everyone: biome bands rotate every two to three floors, and each floor's layout holds for the whole week. When the week rolls over, a brand new abyss takes its place.
Charge attacks, weapon coating and bleed/sunder stacks all matter more the deeper you go — see advanced mechanics. Start a run.