I chased lance up the stairs and to the roof, he got a few shots in during the chase. Once on the roof enterance i ran past the barrels and directly to the heipad. Then i took out some remote grenades and tossed them over the ledge. I then killed the survivors and ran to the safe.
After Sonny stopped talking i ran directly down the stairs for the den area on the left. There are columns there that obscure his view so he can't get any shots in with the ruger. I then took out the spaz shotgun and ..well he didn't last very long.
