The Metroidvania-genre has become something of a niche in indie gaming, and Guacamelee is a shining example. Tight controls coupled with colorful, smooth graphics, combing exploration with a brawler combo system in fights make Guacamelee fun to play. The music relies on typical mexican instrumental, brass heavy ensemble music, fitting to the game's style and setting and giving it a certain melancholic feel, sometimes.
While the gameplay is fun, the story is rather uninspired, but that's okay. This game is more about the fighting and exploring, than the story. There is a nice little twist, however. There is nothing really new, gameplaywise, either. Also, the exploring doesn't feel quite right, as you are always guided by an arrow on the map where to go next. This is a bit sad, in my opinion, as I love metroidvanias for their laissez-faire gameplay: proceed by exploring.
Nevertheless, Guacamelee is a fun game that will give you some hours of gameplay, and some more if you plan on 100%ing it. Getting into the combo system might take a little time (it took for me, but I suck at these things, anyway), but once you got it, it just flows. By now, there's another version out, called http://Super Turbo Championship Edition
which you might rather buy, instead of this, as it includes an additional level. But it contains less achievements, if these mean anything to you.
Fun, colorful game. Recommended.