Half-Life: Opposing Force Hints Guide +++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++ written by: Carpediem2100 date: March 29, 2006 updated: March 31, 2006 I purchased & played the whole single player game. It was difficult & I couldn't consult hints/cheats (but I sure wanted to,) as I didn't have access to the internet at the time. Another foolish thing was that I went through the entire game the first time on the "hard" skill setting. I got stuck & frustrated a lot. One of these times was due to the fact that I played the game in a D3D (Video Acceleration) mode, and this configuration wouldn't show details under water; I stumbled on this solution when I switched back to Software mode. I realize that the names of the monsters and equipment are not accurate but they are descriptive enough to help other players who get stuck in parts of the game. Please enjoy these hints. I. WELCOME TO BLACK MESA ======================== You start at the lab. Get a POWER VEST. Go down to cop's room; he'll let you through the door via retina scan. Pick up WRENCH. Disable laser by breaking mirror. Go upstairs. Go outside to terrace. Jump down and follow ridge to the top of the other side. Then jump back over and end up on the same side you started. Walk to the wall; get KNIFE from Alien. Superjump across the ravine into the open door. This eventually leads to the outside again. There is a crashed plane here. Go inside hangar. Follow outside to electric fence. Crawl in fan tunnel and exit another tunnel (be patient!). You end up inside the fenced area. Turn off the power box. Get your 357-GUN here. Return to plane. Get goodies. Go down the rabbit-hole. Search for a door. Enter and get SHOTGUN here. Descend ladders. Go through metal door. Enter Toxic Waste Room. Jump broken bridge. Wait by broken ladder until beam falls. Use it like a ramp. Try both doors at top. The well-dressed man will let you in. Take elevator down into another waste-room. Use conveyer to get across sludge. Enter room with 2 stop-gates. Enter room with a broken pipe. Enter hole in pipe. ---> waterslide ride. Hole in grate leads to 2 barnacles. Look around. Climb red ladder. Go to robot-loader room; clear robot blockage. Descend ladder. Clear sewage overflow. Exit room via automatic door. Ascend elevator. Enter monorail room. Jump onto metal plank/bar, and into the monorail car. II. WE ARE PULLING OUT ====================== Arrive at station platform. Drink some pop. Across from "Security" there is a science room. Get scientist to heal you. Go up inclined lift. Pick up a MACHINE GUN. Go through vent. Ascend ladder. Enter 2nd vent. Approach the escape bi-rotor osprey. III. MISSING IN ACTION ====================== On the floor there are some puddles. Climb a stack of (3) pipes and go through the vent. Arrive at a water filled room with an electrical fault. Keep jumping until you are at the foot of the fallen air duct. Use it like a ramp and go back into the ceiling crawl space. Use your remote explosive to clear out the weak ceiling tiles. Jump the gap into the new crawl-space. Continue to ceiling Fan Unit 1. Walk the beam to Fan Unit 2. Exit. Superjump to the cell-door. Get goodies. Go to the fan with 1 propeller blade, and down into its vent. Enter furnace room. Time your jumps across the fires. Get goodies. Go through vent. Time your run across the fire. Time your run into the tail of fire #2. Follow it through its tunnel. Crouch down and kill baddies. Approach the "living-light plants." Place explosives crate into the "test fire" lane. This blows a crawl hole for you. Go through. Enter vent. Enter a cavern with a truck inside. Go to "storage area 2 and 3." Open doors in storage area 2. Get goodies. Approach "service elevator." Go into the elevator shaft and down the yellow ladder. Enter broken elevator car and proceed to the first (floor) entrance. Where it says "caution, wet floor" keep jumping boxes until you arrive at "unit 2 power" room. Turn the box off. Go back to elevator shaft. Climb up the yellow ladder. Jump onto the (dead) power cable; climb up top and enter top floor. Break vent and crawl through. You end up in water. Go through the hole in the wall. Exit the red door & grab your silver cube. Use cube and jump over the garbage can. Now grab the cube and go through a side room and use the far vent. You end up in another room. Exit the room and go through hole in the floor. Turn off the power box. Climb up the cable. Two soldiers will come rescue you. The engineer will open door marked "elevator." Go in with the soldiers. IV. FRIENDLY FIRE ================= The engineer opens up the 1st floor door for you. Go inside security for goodies. Go to 2nd floor now. Kill baddies. Room B-591G: a pipe will knock a hole in the wall. Go in and up. Go up the twin pipes. Go all the way and climb red ladder. Superjump to steel door. Kill 2 behemoths. Superjump bridge. Go up the steel lift. Climb the beam like a ramp to the surface! A medic awaits you. Enter vent into surface structure (Ordinance Storage Facility). Kill ninjas. Free the engineer. Get the medic to heal him. Get the engineer to open the "Secured Access Lambda Sector Transport" door. This leads down to transit system. More ninjas. Open the "Secure" gate. More ninjas. Ride Train. Take out the last ninja. Get to the goodie room. Climb pipe ramp to vent. V. WE ARE NOT ALONE =================== You are in front of the entrance to the Portal room. Don't follow Freeman. Go around the track until a skyway falls and becomes a ramp. Go up this ramp to the alternate portal and enter. Jump to some stalactites until you find the green PORTAL-GUN. From here, jump to an adjacent s'tite with a pop-up crater. Use crater to pop-up to the 4th s'tite. From here shoot 2 turkeys, and then jump to their s'tite. Now elevate to s'tite in the middle (the tall one). Now all that is left is to run toward the green portal. VI. CRUSH DEPTH =============== Take the elevator to the basement. [left door = restricted retina scan] [right door = Hydrofauna Studies Lab. Level B] Help the scientist with the transporter. He will assist you with the retina scan. Go up the second aquarium ladder. Kill rhinos. Enter vent and then aqua-transporter room. Go inside and transport yourself. You end up outside the room about to drown. Escape by finding hidden waterway. Enter vent and fall into the pool. Climb out and kill chicken. Climb down red ladder. Turn red valve. Go back up and jump back into the pool. Kill Ichthyosaur; Go through tunnel and turn red waterlock. Go to x-ray room. Shoot the powerbox. Kill aliens and get ALIEN SHOCKWEAPON. Enter the airlock. Go through portal and another portal*** brings you back to airlock-B. Follow to flooded pathway. Submerge yourself in the water and kill 2 ichthyosaurs. Swim up to hidden tunnel. [*** optional sidestep here: right mouse click the green portal-gun & it teleports you to a stalactite closer to goodies.] VII. VICARIOUS REALITY ====================== "Biodome Drainage System" Go up an electrical/steam ramp. to the Biodome complex. "Specimen Observation Area 1" * jump into biodome. Go to cave tunnel with elevator. This leads you to specimen house (1). [From specimen house (1) going right takes you back near biodome*] Going left takes you to the specimen containment room hallway: First Aid | | | ***Specimen Room ----------- --------- Specimen house (1) | | Storage ------------ --------- Storage | | | elevator Go to the elevator and break the glass and climb in. Go up. Climb the yellow ladder; then, jump onto the top of a toppled elevator door to gain access. Door <---- ---- steam | | | elevator Going right leads you to steam; Take the left path to the door. Danger Sign! ----- <----- | | | elevator3 Continuing left brings you to a dead end skyway with a danger sign. Here you can jump on top and destroy crates below. You cannot kill the tall dragons. Take the elevator (3) down. Enter "control" room. Shoot glass. Go down into the biosphere. There is a fountain of youth (health) here. Head for the tunnel/cave. This leads to the SEAHORSE room. From here, going in one direction leads you back to the Specimen room*** above. Go in the other direction and it takes you to "specimen observation area #2". Follow path to lobby, and then to a chicken room, and then to "Data control ops". Continue to the specimen test lab. Activate the hologram. The specimen containment room unlocks at the completion of the hologram. Get yourself a BARNACLE GLOVE. Go to "Testing lab BDRC-101". Go to specimen cultivation room. Collect seahorse AMMO here (max 20); You will need the barnacle-glove to get across! Go to the lift. Enter barnacle room. Go to the next lift. enter a beastie room: [going up the stairs leads to an elevator and then a control room with goodies] [going to the adjacent room leads to the pit of dragons] In the pit of dragons, the tunnel cave is defective, and the opposite entranceway won't work. Use your b-glove and go to 2nd floor room where you will find a tunnel. Take the tunnel to "maintenance area". Turn off Unit1 power. Go through the fan vent. VIII. PITWORMS NEST =================== This is a puzzle stage. Here are the pieces of the puzzle: - Turn on Gearbox - Turn on Vent - Turn on Valve system - Flush toxic waste (& resident caterpillar) - Extend the telescopic bridge. IX. FOXTROT UNIFORM =================== Kill ninjas; use boxcar ramp; There is a sniper on the second floor where the camouflaged window is. Go inside warehouse and go down the bugs-bunny hole. Here are a set of tunnels with (big) bedbugs. Go through to water pool. Close 2 metal doors so no more rhinos come. Get goodies. Go to the next tunnels There are more bedbugs. Find the red ladder and climb out. At the surface base, you get helpers: Medic, Engineer and Muscle. Go on an Alien hunt. Go in to the "secure" building. Gargantuan is on the bridge. (In this stage, you can refuel your seahorse if you want to). Blow up the bridge. Enter pipe in the middle of the blown-up bridge. Take a ride down (waterslide style). X. THE PACKAGE ============== Follow the river and kill ninjas. Take the sand-path to "mortar headquarters". Kill mortar-ninja at an angle due to the Lexan. Enter a side door and get goodies. Use a radio if you see one. Now go to the tornado door at the left of the mortar. Enter the area between the pipes. Get goodies. Go to the mortar. Blow up the side gate. Enter revealed side door. Blow up chopper. Get on roof. Come down and crawl under ajar red side gate. Turn off powerline box. Go back on roof. Walk across the tightrope. Enter roof vent. Go down into underground parking lot. Climb up on top of the SUV truck and up into the vent where the cop is. Continue in the vent system and emerge out the other end of the parkade. Dismantle bomb. Go inside cop room and then down to storage. XI. WORLDS COLLIDE ================== Kill ninjas. Cross the track at the end of the conveyor to the secret storage rooms. Duck between cars to cross track several times. Go to far storage room where the conveyor can't be heard. Kill ninjas. Go on top of palettes and superjump to the very top of crates, all the way to hidden conveyor room. From the conveyor room, you want to go to the area in the upper left corner (ie., 10 o' clock) because there is a panic room here. Take the elevator down. Big Boss Stage -------------- Shoot the boss's eyes so he opens his belly. Shoot his belly. You have to do this several times. Weapons which will work: seahorse; sniper rifle; rocketlauncher; machine gun; heavy machine gun; final stage gun emplacements.