Normal

Act 2
- The Skeleton Ruins past the Farmer's Village waypoint are a great source for XP if you need it. You get crazy enemy density there and 3 Dark Obelisks which grant lots of XP

There might be a better one a bit further. It's just before you reach Memphis, you take the nearest rebirth fountain at the edge of lower Nile just before Memphis Outskirts. The tomb to the North has a boss dark obelisk that has a fixed spawn in the tomb. You get on average 42257 XP on one run and it takes about 2-3 minutes to kill the enemy's on your way to the tomb and clearing it. You also get some early game epics.