DM-Deck16][, a remake of the original, with some extra changes.
DM-Morbias][, another remake of the original one for Unreal, this time with an extra redeemer.
The last match is a 1on1 match against Xan in DM-Hyperblast: a ship going hyperspace. Notably, Xan is a challenge because of the game's (at the time) excellent A.I. (With Dynamic Difficulty for him to boot)
DM-Barricade, a castle in the first Tournament... that's floating. In a lightning storm.
DM-Phobos: One of the most evocative and disorienting, since the skybox rotates with a panoramic view of Mars.
Several of the combatants have awesome feats in their careers, with solo-combatants and entire teams being (composed of) highly condecorated veterans.
Deathmatch!Slain's description:Slain fought with the 47th Mechanized Imperial during the First Necris Invasion.
Deathmatch!Annaka's description:Annaka is a premier demolitions expert. She masterminded over 20 covert structure hits against the Skaarj in less than a year and advises the NEG 'WetWorks' Board on Amphibious Arms Deployment.
Deathmatch!Arys's description:Arys is a field commander from the 12th Mechanized Imperial. She was selected for Tournament play after she single handedly killed 8 Skaarj with an energy knife during the battle for the Orion Stormwatch Outpost.
Farham's description:Farham fought with the Earth Defense Force during the ‘7 Day Siege’, Earth’s darkest hour during the war. He was solely responsible for the destruction of the Skaarj Skri’ith Class Dreadnaught ‘Krujhlok’ and is a highly decorated veteran.
Drimacus's reaching the top of the ladder by starting from the very low levels, unlike other warriors. You encounter him in the very last match of the Deathmatch ladder.
Malcolm being "FenTech's finest creation". Considering he went on to become the nine-time Champion of the Tournament (and, in a meta level, the Series Mascot with later installments), he definitely is.
The sole fact that the N.E.G. managed to create Skaarj Hybrids and Liandri even got to have a full-blood Skaarj in the Tournament. Consider that we're talking about a race which brought Earth down to its knees.