- slide 1 of 7
Core - Level Start
When the level begins, start by moving to the left up the stairs and enter the alien structure. Make sure you pick up all of the ammo first. Once you're inside it, it's pretty much a straight path until you start floating in the air. When that happens, go down an opening to the right at the end of the corridor. You can't miss it thanks to the sparks. From here, you'll need to smash some form of barricade to proceed. Again, it's a straight path forward. Keep going against the current, but be warned that an alien will attack. Take out the cylinder with an orange light in it as well, when you come to it, just after the alien.
When you come into a large chamber, you want to move downwards and then up through an opening with a blue light. A cutscene will play from here, and you'll need to take out the alien. After that, move through an opening in the wall.
This will lead you into a large chamber where you'll be attacked. You'll need to take out all of the cylinders that glow orange before you can move down a large tunnel with a blue light coming from it. At the end of it, destroy the barricade and continue on. When you come to a large chamber past an alien working a computer, you'll have to wait for the forcefields to be turned off before progressing. After that, go through the blue lights.
- slide 2 of 7
Core - Escaping the Alien Structure
This will lead you into a large chamber where you'll be attacked. You'll need to take out all of the cylinders that glow orange before you can move down a large tunnel with a blue light coming from it. At the end of it, destroy the barricade and continue on. When you come to a large chamber past an alien working a computer, you'll have to wait for the forcefields to be turned off before progressing. After that, go through the blue lights. This will make you go through the tunnels at a high speed and bring you out at a new location.
Go into the large chamber and explore. Eventually, enemies will start coming alive behind the barrier. When the enemies attack, you'll need to go through the opening to the left. The lights will go out here and you'll need to hold out against them for as long as possible. When the objective is complete, go through the big tunnel of light for the level to finish.
- slide 3 of 7
At the start of the level, head down the path to the right. As you continue along this path to the objective, pick up any ammo and ignore the big aliens, but take out the smaller ones. When you come to a ravine, with a building on the other side, jump across for the ammo in the building but then proceed down the ravine. When you reach the objective, a cutscene will play.
Once it ends, you'll have to fight off the enemies with an ally. Grab any weapons and ammo, plus his gun when prompted. Take out every enemy, while keeping in mind the timer that's ticking down and go down the path after the objective completes.
From now on, you need to race from objective to objective and when you cross the bridge, the level will end.
- slide 4 of 7
As the level begins, start by moving straight ahead and you'll encounter a marine. Head inside then and meet with the commanding officer, while taking the Gauss Rifle, the missile launcher and any ammo (keep the Alien Moac gun though). You'll be attacked then by big and small aliens, so hold them off and get into the vehicle when prompted to man the machine gun. This is a strictly on rails sequence until you leave the vehicle.
When you get out, jump down onto the road below and continue on to rescue Helena. Defend her and get into the vehicle when prompted. After that, she'll get into the aircraft and you'll be free to head to the next objective. Ignore the big enemy moving towards you as well.
When you reach the next objective, you'll need to defend the area again. There'll be endless waves until the aircraft lands for evac. Also, ignore the big enemy again. When you get in the aircraft, the level will be complete.
- slide 5 of 7
Reckoning - The Calm Before the Storm
After the opening cutscene for the level, head into the nearby building opposite the captured alien and follow Psycho to the level's first objective. Open the door when Psycho prompts you to do so and watch the next cutscene. After that, head to the next objective marker. It's basically a straight path there if you take the door left, just ahead of the room you leave when the cutscene ends. Listen to the dialog here and sit when asked to. After that, head to the next objective and you'll reach it by going up a few flights of stairs, after walking through several rooms.
- slide 6 of 7
Reckoning - Fending Off the Alien Assault and Shutting Down the Reactor
After the cutscene has finished, you'll need to grab the pistol and then head to the door that's jammed. You'll need to melee it to progress further. Following that, go into the room near the stairs and take the weapons, before heading down. Grab the minigun on the way down and at the bottom, bash the door to open it.
Once outside, you're going to have to defend the carrier from attack. So, try your best to hold the enemy off. Also, there is ammo around the area, alongside weapons. Once they're held off, you'll need to head down to the Reactor, so head to the next marker and a platform will lower you to it.
From here, you'll need to jump down once inside the building and then head towards the next objective through the flooded area. Eventually, you'll reach an engineer, who'll ask you to disable some circuit breakers. Head through the door he opens and carry on. Afterwards, carry on and when you reach a hole in the wall, jump up and climb a ladder from there. When by the objective, hit the red button.
Head through the door that opens and quickly interact with each rod. Head back on up then via the newly opened doors while heading towards the objective marker and fending off any enemies.
- slide 7 of 7
Reckoning - Defeating the End Bosses
Eventually, you'll reach the room where Prophet had been sitting and you'll be able to take the TAC Cannon, so grab it and then continue moving forwards. When you come to the stairs, head up them and you'll be faced with a massive enemy. At first, you'll want to aim for its mouth area, especially when it's open. You'll know you're hitting the right area when you can see explosions.
After that, keep hitting it with everything you have. It will take a while, but it will die. Following its death, move towards the back of the ship so that Psycho can pick you up. However, a big enemy will appear and you'll need to destroy the weapons it has first of all. There are two on its shoulders and two on its waist. After those are destroyed, three enemy flyers will attack. Destroy them and when they fall, lock onto the area that Helena is shining the red light on with the TAC Cannon, then fire.
After that, the ship will expose its under-belly. Take out the weapons there and try to get a lock on a hatch, then blow it away with the TAC Cannon and you should then run to the aircraft that Psycho is flying, then jump onto the ramp and the game will be complete.
- All references and screenshots from Crysis.