Similar to the Clone Army mutator, but when you use it, you can still unlock achievements and stuff. You can also use it in Crime Spree (Holdout doesn't seem to work for some reason).
By going into this mod's options menu, you can set all spawns to Shields, Tasers, Cloakers, Bulldozers, Medics, or Snipers. You can also choose to disable the mod by unchecking the "Activate" button.
Mods that change enemy spawns may also change which variants of enemies are able to spawn. For example, if you use this with ZEAL Tier Selector, you can encounter ZEAL specials below Death Sentence. This will not affect the Sniper option due to Snipers not normally being assault spawns.
Notes
This mod will only work if you are the host.
Every faction is affected.
Scripted spawns (such as guards) are not affected.
Special enemy spawn limits are increased significantly while this mod is activated.