kraxous

The same happened to me so I had 3 Walruses left. Let's just say I wasn't a happy bunny and ran at him like Usain Bolt.

The way I did this was: Get all your Walruses near the radar (within about 20m) and shoot the 'arm' of the radar. You know where it bends upwards? Eventually it will begin to smoke, then set on fire, then eventually will blow up. Just make sure that there is nothing blocking the transmission between your Carrier and the Walruses. If you want that extra firepower, use any Mantas to your advantage. TIP: Control ONE of the Walrus' manually and go to the reticle and select: 'Assist No.' then they will follow you and shoot at whatever you shoot at. Also, try changing the stances i.e. Defence and Aggressive stance. Hope this helps! - Joe.

When you get to the train bit, wait for the first train to pass so you don't get mashed into tiny pieces. Once it has passed move LEFT to the trench, there you will see a red flashing light with a switch which deactivates the forcefield en route left. Once again, wait until the train passes. Move to the next trench fairly quickly and kill the two robots in the trench - if you have enough time (which I doubt), move to the next trench. Wait for the train to pass. Then you should be approaching the last trench, wait for the train to pass once you're in there then sprint to where two orange lights are flashing on your left. There you will find a door with Essi shouting at you in a cutscene. Hope this helped. - Joe.