This game has so much scope, so much range, so much randomness! Just playing the demo version is an exercise is being overwhelmed (in a good way)!
The premise is simple. Pick a character (all with different stats and different mission types throughout the game), customise that character to look as much like you as possible (or not, it's up to you!), then dump that character into a veritable warzone of gangsters, hackers, mad scientists, angry bums, gorillas and who knows what else and see what happens!
It's insanely entertaining, and there's so many different things to see and do and interact with and beat up that you'll be occupied for months... nay, years! So if you want an old school style beat-em-up with an open world landscape then give this demo a trial run. And if that whets your appetite go and grab the full version as soon as humanly possible!
Madguy / Matt, you sir are a veritable genius and I look forward to seeing more madcap work in the future =)