As in Diablo II, beating Baal opens the next difficulty. A hero who beats Baal can continue into Nightmare, then Hell, at her level with her build and gear, or a fresh run can start on a difficulty you have opened.
| Normal | Nightmare | Hell | |
|---|---|---|---|
| Gold from monsters | ×1 | ×2 | ×3 |
| Resistance penalty | None | -40% | -100% |
| Extra modifiers on elites | None | 1 | 2 |
| Monster skill levels | None | +3 | +7 |
| Cold and freeze length | Full | ÷2 | ÷4 |
| Curse length on you | Full | ÷2 | ÷4 |
| Static Field floor | None | 33% | 50% |
| Corpse Explosion damage | 50% | 35% | 20% |
| Skill and passive slots | 6 and 6 | 8 and 8 | 10 and 10 |
Champions
Champion packs come in five kinds, each as likely: Champion, Ghostly (resists 80% of physical damage), Fanatic, Possessed and Berserker (a quarter of a champion's life, but hits harder). Their chests give level-ups through Act II, then stat points or +1 to a skill tree.
After Hell
Beat Baal on Hell and the Terror tiers open: one act of Hell at a time, from monster level 86, with affixes that pay in Magic Find, experience and gold.