Saving the best for last, My Friend Pedro.

You awaken in a meat factory and a Banana is talking to you, he offers you a gun and you kill your way out of trouble while the Banana keeps score.

Pros
Genuinely fun game play.
All your kill shots look masterfully done.
Great soundtrack.
Not that difficult to get into.

Cons
Relies way too much on physics.
Said physics doesn't always do what you want it to do.
The so called focus mode is way too easy to abuse.
Not great at advertising.

Overall
If you can get past the smiling banana on all the image searches, you'll find a good 2D shooter.