The game is fun, I can't stop playing.
It starts out a bit slow with boring characters, but get's better as you unlock stuff.
It's linear in how the enemy lairs are set up, go to next room, kill the enemies, hack the computers.
Other than that you can freeroam and do silly stuff when you want.
It's like someone said before, run and gun using silly gadgets and over the top weapons.
Driving is very bad, but it takes you where you need to go, also some of the cars are from sr4 like Attrazione.
The story and character missions are fun and silly crazy.
The characters are very different from each other, so that there's no character costomization (only skins with different colors) isn't really a problem, you will find characters you like.
Pre order skins are far superior to the others, so if you didn't pre order you miss out, especially on Daisy and Joule.
Shadowfennekin say the female characters aren't cool, wait til you unlock Daisy and the ninja. Joule is pretty cool aswell, Rama too.
Daisy is by far the coolest character in the game imo, and the ninja is probably the best.
Also Oni (male char) is pretty darn badass. (my fave team, Daisy, ninja and Oni)
Ninjas name is too hard to remember, so I just call her ninja.
Sure, the game is silly but it have some pretty funny dialoge between characters and it give a nice feeling of not being serious.
Sometimes playing something not serious can be a good thing.
Grafics are ok, very cartoonish with black outlines on some stuff so it looks like cartoons.
I actually like that.
If you liked sr4, you will probably like this as well.
Just plain silly fun, I recommend it.