Part 17 of a playthrough of the main campaign for Unreal Tournament 3 Black Edition.
Level 17 - Heat Ray
Game Type: Team Deathmatch (4v6)
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Credit to Rah'**** for creating the Unreal Tournament font used in the video thumbnail(s) - which read "Part X - Chapter X." You can find the .ttf font at: http://www.dafont.com/unreal-tournament.font