Destroy the third defense system | Only Human Crysis 3 Guide

As you keep climbing to the top, you will encounter a big group of enemies and a mine field on your left. Dispose of the enemies, or walk around them, and proceed to the top. You are now close to the defense system power supply, where you can reprogram a turret. Disengage the last power supply and get ready for a wave of Ceph.

I recommend that you eliminate them quietly, while in cloak mode, with your Bow and the rocket launcher, in the case of the larger Ceph (it is possible that Psycho manages to kill him for you). Go to the area where Psycho landed and take the vehicle. You now need to destroy the enemy aircraft with the onboard cannon.