In this mod of Duke Nukem 3D, all 12 of Duke’s weapons gain experience points and upgrade as he uses them. Duke’s max health, armor, and some of his inventory items can also be upgraded. As you progress through the game, you will encounter more powerful monsters to match your increased firepower. Based on the popular Duke Plus mod, Attrition incorporates many of the same features (including advanced monster AI, bot allies, mirrored levels, damage effects, and more). Attrition comes with a large number of high quality fan made levels. In some episodes, missions are selected at random, and you must reach a certain score to unlock the boss level and finish the game. In War of Attrition mode, you face a series of challenges with "Invasion" style gameplay. Addictive with lots of replay value, Attrition showcases some of the best levels ever made for Duke 3D, adding new gameplay but keeping the essence of the original game intact
If you use the HRP, Attrition replaces the HRP shotgun with the better looking Mossberg model pictured here.