Credit to DKgaming for base script and Lambda Fox for the models. This mod changes the damage values to be more realistic and challenging. Every gun in the game is now extremely reliable. Enemies that carry firearms now do the same amount of damage you do. (Which is a lot) For example: Combine shotgunners now deal and extreme amount of damage and can easily obliterate you if you do not pay them any mind. Grenades and SMG grenades now have a larger radius and is pretty much guaranteed death if you do not take cover. Soldiers wielding SMGs and AR2s can easily wear your health down and can kill you if overwhelmed. Headcrabs do more damage and can wear you down. Antlions do more damage and if swarmed, can slash you down. Zombies can take half your health down now but still move fairly slow. But you can eliminate all of these enemies fairly easily if played smart. This mod will be extremely challenging but can be beaten. It definitely isn't for everyone.
A video showcasing the damage boosts.