Aliens versus Predator 2/Old Debts

One way is blocked by a crashed dropship (congratulations, you are the only survivor), the other way is blocked by a closed door. Use the grille near the dropship and jump down the pipe.

You will land in a water basin which will turn off your camouflage. You won't need it since you will be fighting a bunch of aliens who will be able to see you anyway. Swim up and prepare an alien vision mode.

At first the road ahead is linear. It has a few junctions but all the roads meet at the same spot. At some point you will come to a huge cave with some flower-looking plants and slopes around the perimeter. The music will change and a small pack of aliens will attack.

Note: Aliens won't stop spawning until you come to a huge opening with two rocks. Enemies usually come in packs of 2-4 units.

Don't waste your time especially to collect trophies. Just run killing aliens and replenishing your health/energy when needed. Long-range weapons are preferable but not the only way to survive.

When aliens stop spawning, you're close to an opening. All routes lead to it. You will see two huge rocks. Leap to the lower one, then to the bigger one, then to the higher ground.

Walk ahead. At first there is only one way, impossible to get lost. Aliens will start spawning again, so stay on your toes. Enemies will appear from up ahead, turn right and head to a small corridor. It's much harder to fight foes now, so just run without stopping. At some point the stone ground will crush and you will fall down. Luckily, aliens won't chase you.

So much for trying to find higher ground. Swim up again and have a look around. There is only one way from this weird cave. It's a huge way which is quite hard to miss. Its floor and walls have a different hue. Pillars can block your view, but walking around the perimeter can help you find the exit.

Eventually you will come to a pipeline. Jump on it and follow it to some constructions up ahead. The pipeline is broken from one side, so it's easy to guess which way to take. Half-way two predaliens will attack, one from ahead and another one from behind. Luckily, they are pretty slow. Sadly, they are pretty tough, you are surrounded and a single careless sidestep can result in falling into the water and a certain death.

When you finally leave the pipe, four aliens will attack you. Do not jump into big pipes, they are filled with hazardous liquid. Be careful with rectangular construction, there are alien eggs there and they can hatch.

Note: You cannot see alien eggs white with your alien vision but they can be clearly seen with your night vision.

Walk up the hill and prepare to be attacked by another group of aliens. You will come to a huge tunnel. Walking ahead will bring you to bones of some exotic animal and a dead end. Turn right (left, if you come from the skeleton) to the elevator. To the left of the elevator there is a way to a lever which you need to pull. It will turn on the power but that's not enough yet. Look for a microcircuit nearby and use your charge emitter to repair the elevator. Now you can finally take a ride up.

On the surface, you will see a few aliens running away. Let them go if you like, they will leave the map anyway. Turn left, crouch through the half-opened door and get down the stairs. When you appear on the lower floor, move forward and turn left. There's not much of interest there, but a lever in the opposite wall from the door, use it.

Head back to the landing pad. It's out the room, right, up the stairs and through the landing pad until you see a panel to the right of the huge double doors. Use it to reveal the circuit and hack it. Get ready for a fight.

Humans have detected your signal and will try to terminate you. They are too far away, so don't bother. You have bigger problems since aliens have detected your signal as well and will try to kill you. They will attack in two waves. At first 5 regular aliens will spawn as well as a single praetorian. It's wise co get rid of the regular aliens before trying to kill a praetorian. When all regular aliens are dead, 4 more will appear.

After a tough fight is over, go to double doors. When the music changes and a dropship flies over you, run away from the doors. Alien or two may attack you from the destroyed gates and another predator will attack the dropship. Go through the gates. There is nothing interesting in this area to search for, so go to a small building with a predator near it. You ally will give you a disc. Walk inside, to the elevator shaft and drop down.