Ability: Use the hammer to set up a laser wall that instantly kills zombies. Lasts for 30 seconds, with each zombie killed reducing durability by 1 second. Undead zombies passing through do not consume durability.
Biologist
Weapons: Hammer (instant zombie kill), Pistol, Shotgun (bullets can bounce off floors/walls), Laser Trip Mine
Ability: Place a laser trip mine with the laser gun. Has a cooldown, and laser gun ammo refills after each shot.
