Totally crazy modification made by russian G-Man fans or... err... haters! XD Featuring: G-Mans (g-men?) are EVERYWHERE! They're invading our dear planet and trying to kill you... And now... YOU CAN KILL THEM! Yeah! :) But don't be surprised when you see their appearance... He-he... >: ) Flying G-Mans, cyborg G-Mans, monster G-Mans, alien G-Mans... Should be compatible with any HL version. Have fun!!