A physics file that makes Marathon (preferably Infinity) 5 times harder...

A lot of enemy reworkings...

Difficulty - Nightmare

Installation... Put into the Marathon Infinity folder, and choose the phyA file in the Environment section... >:D

Modded a lot of physics properties... Made weps 2x as powerful so you could cope...

Pistol shoots Defender bullets (A lot faster though)

Assault Rifle shoots major Defender bullets

SMG shoots pistol bullets (same power i think)

Enemies are nearly doubled in health...

Enemies fire different bullets (Purple Soldiers are dangerous - They shoot rockets)

ALOT more