As Becca (there was no supply zombie to be found) he suddenly has the Grenade Launcher with INFINITE AMMO (not just Becca's fever skill but this is REALLY infinite, just count the seconds he us having infinite without headshooting anyone). He used this cheat to keep shooting at us so we couldn't progress in the game because he didn't get Jill - so we couldn't progress because of the "explosion" animation.
