From publisher blurb:
In an effort to provide gaming groups with additional post apocalyptic class options, we have converted magical classes from the Modern Arcana SRD. While there is no magic in the Twisted Earth setting of Darwin’s World, there is certainly an element of the supernatural in regards to the wide variety of mutant and psionic abilities, and thus a conversion is often possible (and can result in an interesting version of a pre-existing magic based class). Not all the classes are appropriate for a Twisted Earth campaign, but all are useable in some variant of a post apocalyptic world.
New Classes
Beastlord
Computerjack
Lighting Swordsman
Precognitive Hunter
Primitive Weaponsmaster
Street Warrior
TK Speed Demon
Wasteland Arranger
Wasteland Succubus
Wasteland Thrasher
New Feats