Once you get a hang of the movements and timing, this game will get you addicted. The levels are very difficult, but after a while you'll be running through levels that looked impossible at first. The look is very retro, and the musics work well with the whole.
The only bad thing I have to say about this game is a little 'glitch' considering the achievements. I ran through circa 10 levels this way: I used the first run to do the 3 star time, and then pushed replay to do another run where I got the briefcase. After finishing 10 levels this way, I realized that my 3 star times had not been saved in the achievements.
With a game as aggravating as this, that just made me double-frustrated :D