Talk:Interception/@comment-25450485-20141027062537

Advice for Archwing interception missions (such as the ones you need to do for the Limbo quest)

Pretty much every wave some Grineer manage to get stuck in that huge rock somewhere in the center of the map and people are stuck with not being able to kill it and can't complete the wave. The reason for it is that behind the silo there is a hole (rocks didn't cover it) where enemies can fly in and usually get stuck. If you want to kill the enemies there, you need to find that hole and follow the grineer inside.

I stumbled upon the hold by accident just now, but it should be somewhere just below one of the Grineer Silos on that rock. If you can't see, fire your weapon, that will illuminate your surroundings (you have unlimited ammo anyways so don't worry about wasting ammo)