The other teammates left you behind, defending the main base, while they roamed around the nearby towns, scavenging for resources. There weren't many zombies around, so you took it upon yourself to fix and upgrade the turrets you created. You don't even notice the belcher spawning right behind you. He stoops down, closer to you, curiously watching you turning gears and tightening bolts.

You notice him when he drools some acid saliva on the ground right next to you, letting out a low grumble