Resurgence is an upcoming Skaarj campaign/mod for Unreal v227. It includes new maps, weapons, enemies, and features.
One of many races to be subjugated by the Skaarj, these cackling savages are well suited to chasing the Skaarj Hunters' enemies or the occasional Nali slave. They are equipped with specially-made impalers (among other weapons) and generally work in groups.