But you can get passed, but you can't see the bastards. But 3-4 rockets does the trick. Once passed the sniper and alarms you got the entire base ahead of you. Turrets, god damn turrets. Turrets come in 3 flavors easy kill, bitch ass, and mother fucker.
Turrets look good, real good, and sound good to.
But whats cool with the grappling hook, is you aim it at the flag and ride your way in. You move fast enough to not take that much damage. And do the same when you wanna get out. Just get out as quick as possible. Now, the flag stays where you dropped it for 60 secs.