Aliens Attacking

The pink aliens gnashed their sharp teeth and slashed their claws against Olivia's bubble. They didn't do any damage, but it was still a frightening display, and they weren't about to give up. "Todd, why the fuck did you say you heard of that game?" Olivia demands. "I don't know. I wasn't thinking." "No shit. That's obvious." She replies. "Easy. We need to keep our heads." I say. "What do you suggest we do?" Olivia asks. "I don't know, but it looks they're getting tired."  "You think so?" Todd asks with a little bit of pep in his voice. "Yeah, they're not clawing the bubble as fast as they were earlier." "I guess we could watch them for a little." Olivia says. Even though they were becoming sluggish, it was still intense watching them attack our bubble, but we stood our ground. We watched them thrash at out bubble until they were all but depleted of energy. They hunch over, drained, almost lifeless. "You think it's safe to leave now?" Todd asks. "No, don't be stupid." Olivia snaps. The alien leader stood up straight. He let out a bloodcurdling scream. The scream echoed in our bubble. It was so violent and cruel sounding that we soon found ourselves without any protective shield in a desolated city.