I used it last night to kill a zombie... it does the 2nd best damage behind a knife attack... It is best used in conjuction with other team members shooting the zombies. You get on the table in the corner room and fire the zombies up, while your team-mates keep them pushed back. It takes about 200-units of flamethrower to kill a zombie and gives out the same amount of damage if there is more than one Zombie at the same area. Good as a support weapon.