Availability: After “A Pact With Rais”
Location: Irwin is in the Next-to-Last Safe Zone in the Upper Right of the Slum
Rewards: 2,500 Power XP, $500
Difficulty: Medium
This challenge is on top of a small building in the southwest. Talk to a movie director to begin, then blast 40 Infected with a Double-Barreled Shotgun within the time limit without getting yourself killed.
Don’t bother trying for headshots; you do so much damage with this weapon that kills are practically guaranteed. Just bunch the enemies together by strafing around them, and fire into the mass as often as you can. Back off when reloading, and keep at it until you get all of your kills.
Get your reward for this and come back to Irwin later for another challenge. This time, he wants you to kill 60 Infected with a machinegun. Dodge backward if any Virals get too close, fire in bursts instead of holding down the trigger, and get headshots when you can. Be particularly wary of the Toad that appears on a roof across from your starting point, and avoid running out of easy targets. Once the Biters thin out, go across the street to the train station. Many more are there, and finishing the remainder of the kills won’t be an issue.
The third challenge is a headshot contest. You must score 30 of them in the time allotted. It’s mostly Biters in the field with two Goons, too (as your secret weapon). Aim down your sites to improve Crane’s accuracy, and make sure to get multiple headshots when targeting the Goons to increase your score as quickly as possible. You can get almost 10 headshots off of a single Goon, so don’t waste that opportunity.
Beyond that, just stay cool and aim. Random kills hurt you here, so don’t shoot unless you have a perfect shot lined up. Ignore the clock. If you run out of easy targets, turn around, hop off of the bus, and kill Infected on the overpass.