Please help, as this is driving me crazy! I have watched countless videos and read countless walkthroughs. Basically, I'm at the Solarii fortress, and the cut scene with Nikolai as you drop over the ledge and find the grenade launcher. When I pick it up, I have no ammo. Should I have picked up grenade launcher ammo earlier? Anyway, even with ammo at 0, I'm still able to fire and I think I get Nikolai every time. But then Lara dies. Over and over. I have done it quickly, I've done it slowly. Nothing works so far. Any ideas?