Aliens vs. Predator

Close combat is difficulty. Most Marines will just unload on you, but they can also block your light attacks and counter with a melee bash of their own. Try to land a light attack hit followed by a heavy attack.

• Watch their movements. Always be ready for a Predator's light attack by blocking during a fight. Predators block by holding their claws in front of their face. When you see this happen, do not use a light attack because they will block and counter. Instead, get just out of range of a quick light attack then use a heavy attack, followed by another; then use one or two light attacks or execute a front grab.
• A predator's heavy attack is coming when it holds its right claw back in a charge. This is also accompanied with a loud growl. To counter this, quickly use a light attack. Do not block, as it will have no effect on the Predator's heavy attack.

Created by acidglow.

• Shooting both barrels of the shotgun counts towards unlocking this achievement or trophy. Try this in Survival! C-block. Fight off three waves of Xenomorphs and the bay doors will open behind you. Inside are Health Stims, shotgun shells, pulse rifles, and a second smart gun near the bottom of the stairs. You will have many opportunities to line up two Xenomorphs because of the abundance of hall ways. Kill all but two Xenomorphs. Shoot the legs out of one. Counter the mobile Xenomorph onto the ground on top of, or near to, the legless one. Then, empty both barrels on them.
• After you get the shotgun you have to cross a small bridge outside. About eight Xenomorphs will run across to you. Whittle down their health with the rifle before taking out the shotgun. Aim carefully and fire both barrels. If you do not earn the achievement or trophy, jump off the side of the bridge and die. You will start again at the end of the bridge before the aliens appear, giving you another chance.

• At the start of the Ruins level, you must activate three Predator switches to open the door. When you open it, a moderate number of Xenomorphs will be crawling on the walls. Throw your disc at them. On the return trip the disc should take out a second alien.
• Created by XCVii007r1.

 As a human, use block (LB + RB) and keep your back to the wall. When an enemy uses a light attack, as soon as it deflects, press RB to hit them and shoot them. If they used a heavy attack, immediately punch them (RB), and shoot them to death. As a predator or alien, block (LB + RB) and when they do a light attack, block, press RB, then press LB. Afterwards, you should be able to grab the enemy and kill them. Note: This also works for single player and Survival modes.

Turn the switch at the temple, and an object with a red symbol will appear. There are also two other switches that you have to press. One is found below the gap you jumped. The other switch is found to the left of the first switch you pressed.