Times Square (part 3)

After riding the elevator, follow your teammate to a double-door that you can open. Toward the back of the large room, look up at the skylight dripping liquid-marshmallow to cause numerous marshmallow baddies to drop in. Quickly hightail it behind a pillar closest to the back windows, and open fire on the copious marshmallow-minis. However, regardless of how good your aim is, you'll soon be quickly surrounded; when this happens, hightail it to the other side of the room to put some distance between you and the enemies and open fire again. Remember to use darts on groups of enemies for some quick kills.

With the room cleared, open the door along the back wall, ready to blast several more Marshmallow Minis who'll storm through. Push forward to find a damsel in distress--fire a dart at Stay Puft's arm when he reaches for her to send him reeling, then take down the attacking minis after. You may want to back up into the hallway you just came from to funnel them to you for easy pickings. Afterward, follow Ray through the door to meet up with Peter and the girl.

Follow them through the door and up the stairs to the roof, where you'll battle a few Ghosts. They shouldn't pose much challenge--just keep your distance, giving you time to side-step their projectiles. Oh, and be ready for a couple more to spring out of one of the skylights. With the area clear, approach the ledge to find Stay Puft as climbed his way up to you! Knock him off with a dart!

Ha, as if a single dart was all it would take to defeat Stay Puft! Thankfully, he's still just full of hot air mostly. Don't bother shooting Stay Puft himself until he gets near the top of the tower, as your shots won't have any impact. Instead, focus on taking down the marshmallow-minis he spawns when he blows horizontally across the building. His only other attack is to try spitting marshmallows directly at you, which can also be easily shot down. Now when Stay Puft gets close to the roof, he'll grow visibly tired--shoot him now with a dart to knock him back down to ground-level. Repeat this twice more to do him in for good.