Frankly, I don't know much about Hasta La Vista Social Club. I have no promo material and their Facebook page declares little about them. They're from Finland, play a hybrid of melodic hard rock and punk, and indicate Social Distortion, Backyard Babies, and The Hellacopters as influences. And I have no idea whether Melt is their debut album or not. That's some basic facts.
After those notes, perhaps the first and best thing to say about HLVSC is that they play rather catchy melodic hard rock with a punk edge. Actually, my first description would be to call this more melodic guitar rock as it really leads the songs. Having some decent leads kind of makes HLVSC an anomaly on the punk side of things. In that case, these guys are better than those Green Day posers. Top picks for rockers: Not Sorry for You, Final Isolation, Walk With the Gods, and Fool of Alcohol King. Wild cards for genuine creativity: Lonely Again with the harp and the bluesy country feel of Death Is Not the End.
Though much is not known about Hasta La Vista Social Club, you should get to this band and their latest Melt, especially if you like guitar driven melodic hard rock with some punk spice. Recommended.