These Mods happen to change other things than they were advertised, and it's annoying since I want to keep the core experience of other Campaigns/Mods as pure as possible.

Serious Sam BFE : Devolved: It reduces the Grunts' Health (Shotgunners & Riflemen) so that, instead of taking 3 Pistol/Rifle Bullets, they only need 2. This Change carries across all other Campaigns and it's kind of annoying.