Ah! I figured that one was an actual hint, and I had checked around the park's water, but that didn't get me anywhere? Unless it's a reference to the larger map, and I can see if I stumble across anything.
Hmmm, no, I did get those, they just weren't being counted towards my recruitment total, I don't think. It just said I had seven at the end.
I did get the Outcast! So it seems the only thing I'm missing is the sword. I'll give another go at digging that up.