Resurgence is an upcoming Skaarj campaign/mod for Unreal v227. It includes new maps, weapons, enemies, and features.
Renamed by the Skaarj Hunters as a symbol of their close working relationship, the Kraal are devilishly intelligent and hold positions of power that their lesser relatives can only dream of. The Kraal are a diverse bunch, so don't expect to fight them like ordinary Krall and come out unscathed.