So, I got Harley's Revenge this morning, and decided I'd play through it. Overall, not very long, so I ended up beating it... or so I thought. The credits rolled and so I assumed I was done. I didn't get all the balloons, nor did I
disarm the bombs in 3 minutes
though, so I went back to go get those again. I got a few more of the balloons, got through to the part where
I've saved the first cop and need to investigate the location they were beat up for clues
I'm taking a break so I popped back out to the main menu, and wanted to see my stats. When looking in the stats area, I saw that I had 28/30 balloons (which I already knew from the map screen) and there weren't any fun stats specifically about Harley's Revenge. But I did notice that on the stats page, it lists my story progress as 30%.
Is there more story after the credits, an alternate way of doing things, or is this just a "feature" where that counter resets every time you start a new run of the DLC?