UnrealSP.orgLegacy: "The Altar of the Sun"
Scenario: You finally manage to catch up to the Skaarj Warrior with the Ivory Key. Afterwards, you enter the Altar's main grounds in hopes of finding a way back to someplace familiar.
Altar 1: When you fight the Skaarj Warrior in the underground arena, don't forget that he's not your only enemy. You also have to deal with Ants that are throwing spikes through the opening in the blocked passage.
Altar 2: The way out is very close, but you need to look behind the sun for the means by which to clear your path. Also, the GasBags make good targets, but don't underestimate them if they come in large groups.
Warp Key Info: Mark a place, and teleport back to it.
Orb Regeneration Areas: The two pavilions that are about halfway back in the outside area are regeneration areas.
New Weapons and Significant Items: Ivory Key
Destination and End of Level: The Nexus, on a high ledge near a manta's nest.