Wow, I haven't checked this in a while, was sure it had stayed down in obscurity.
After you get the suit back, you then need to continue through the dungeon, there are several doors in there that you couldn't walk-through until you had your suit back.
I know that the city wasn't too interactive, I was both running short on time, and lacked an inside tile-set for a city location that wasn't an apartment or a grocery shop.
Know, however, that Outlaw City is currently being remade; the battle system has gone through some fairly intense changes already, and I'm planning on revamping the game into at least 2 episodes; it will feel nothing like the current story, and have many more chances for things like missions and feeling like a super-hero before always going back to the story.
The biggest roadblock I found with Outlaw City has, and remains, tilesets. There just aren't any good RTP tilesets for modern/short-term future cities. The ones I have are pretty much just copy/paste buildings, instead of the piecemeal ones that exist for RTP that let you make such expansive and unique maps.