Difficulties and death

The story progresses through Normal, Nightmare and Hell dungeons: monsters reach higher levels (and drop higher-tier loot), resistance penalties increase, and monsters regenerate in Hell. Defeating Arthur on floor 100 unlocks the next difficulty (Dungeons).

Difficulty	Resistances	Merchant item level cap	Monster regeneration
Normal	+0%	35	None
Nightmare	-40%	65	None
Hell	-100%	90	0.5%/s

Monster regeneration is a share of the monster's maximum life per second of battle. Summons don't regenerate this way. Prevent Monster Heal stops it for good on any monster it hits.

Dying

Death is final: the hero and everything they carried are gone, and the account is paid for the run (Account, unlocks and payouts).