Just like in Half Life where the names of some developers were put on the lockers, the Opposing Force developer's names are also in certain places.DMM 1999 refers to David Michael Mertz 1999, the creator of the bootcamp. Go straight through the floor then and you reach a room with the hidden message "DMM 1999". Start the "boot camp" and type /noclip in the console to walk through walls.Look up and you'll see a texture with this poem: "HACK HACK HACK / ALL DAY LONG / HACK HACK HACK / WHILE I SING / THIS SONG." The song originally started with "MOP MOP MOP". First type "chase_active 1" in the console, then type in "thirdperson". When talking to the G-man after finishing the game, you're frozen. The game contains a parody on The Beating of a High School Janitor song by Adam Sandler.During gameplay, bring down the console and type "haiku" (without the quotes), the game will treat you a strange poem (a random generated Haiku from the opfor.dll file).He's got easter egg shells in his eye sockets! On the corkboard on the wall there's a picture of Gearbox designer, Rob Heironimus. fire of the displacer while you're still on Xen (right after you first get the weapon), you'll be taken back to the hazard course on Earth. He was born on January 8, after the game shipped!
That ultrasound is of Randall Steward Pitchford III, the son of Randy Pitchford (the leader of Gearbox Software who developed Opposing Force). If you run around the zombie into the lab, you'll see a computer with an ultrasound image.
When you meet the final boss, you hear him grunting some weird words.The game contains a multiple easter eggs: Item, Mechanics, NPC / enemy, Story / missionĬontributed by Patrick Bregger (271463) on Jan 11, 2012.