The Sunspire. Definitely one of the most memorable levels of the game! Also getting the minigun in this level, which isn't very useful since it uses the same ammo as the pistol and does way less damage per shot.
Full walkthrough / playthrough / gameplay of the classic Unreal 1 from 1998 (from Unreal Gold) single player campaign. This walkthrough was played at the highest difficulty setting called "Unreal", recorded with Fraps at maxed out graphics settings and uploaded in 1440p. Part 19 of 37. Playlist link: