Terminus is the 14th mission of Crysis 2. For this walkthrough, players will defend Grand Central Station from a Ceth assault. The mission acts as a gauntlet, with waves of enemies dropping down, until finally a Ceth Mech (much like the one in the Corporate Collapse mission) will assault the player.

1. Walk towards the soldiers.
2. Walk with the soldier to the objective.
3. Follow the men.
4. Get in the elevator.
5. Follow the commander.
6. Follow the marines when your mission is updated, and then head towards the new objective. You will have to halt the alien assault.
7. Break open the door on the left, and then go up the stairs.
8. Jump over the cracked stairs to the next floor.
9. The best decision here, without a doubt is to man one of the gunning stations. Walk up to one of them and press F to use, and start shooting down aliens. If you run out of bullets or want a different position, switch to the other gun nearby. 
10. Note: keep in mind that you can also DETACH the gun and use it as a normal weapon, just like you did before in the Crytek building mission. This may in fact be the better choice, as you will be able to take cover as well as fire.
11. Take out the Squid Tank or "Heavy" first as the soldiers call it, before killing the other aliens.
12. Note: watch out for the weaker aliens that will appear on your right. They will kill you with the combined fire of the aliens at the front if you ignore them.
13. Take out the new aliens that drop down.
14. When the Mech drops down, finish off any aliens, and switch your attention to the mech. Just like before, you will want to try and hit it's weak spot if possible, but this is not required.
15. Start picking up ammo and new weapons, scattered all around the station. Look for something powerful like a rocket launcher or the Swarmer weapon. Also, make sure to stay down low and use the environment to prevent taking damage from the Mech.
16. Whenever you encounter new aliens, take them out first before switching back to the Mech. You don't want to fight two fronts at the same time, as the Mech is enough trouble by itself.
17. Keep in mind you can also drop down, and use the passage ways below to try and find a good spot to shoot the Mech from.
18. After you take down the Mech, an armored vehicle will appear. Get inside it.