Well, I had a closer look thanks to you Jal, and it's certainly done with care (I hadn't really bothered to look the first time), so I accept there's an intent in the simplicity. Even though I still have a feeling of something missing... I like the colors though!

I dunno guys, the mere fact that the piece is well pixelled and AAd with some care justifies the simplistic look. The pixelart techniques are all there. I liked it.

Agree with previous comments...

Also, shouldn't it be Let hell out of the bag ?

Check with native English speakers, with luck you might find some!

I think this is the coolest title, but the picture could have been better in my opinion, I was expecting something like someone looking into a back and opening it up and like fire shooting out and burning him up or smoething crazy like that.and maybe some demons.

 seriously? you should push yourself a little bit more. 8I