If you play this game like I do, shooting 100/100 targets in 60 seconds would be impossible. Fortunately, there is a way to break the system entirely thanks to a huge oversight in this quest's design.
Wilson tells you to shoot the targets. What he doesn't tell you is that shooting the same target multiple times raises your score by multiple points. If you use the pistol sitting on the table when you arrive, you might get a few points per target. If you use the automatic "Dying Night" pistol you get back in Act 1, you might just get 7 or 9 points per target.
I didn't get around to showing this in the video. I don't know if it's randomized or not, but the reward I got for doing this was pathetic. It's an Epic-level pistol that didn't even break 100 dps. Take off the sight, scrap it down, and sell the pistol (or scrap that down too if you need the parts).