An underrated gem. I honestly have never heard anybody say anything about this game, but I tried it because it's free with PS+, and I'm glad I did. It captures the irreverent spirit of the Guardians films, but the characters are more true to their comic book counterparts. Listening to the team banter between missions is as much fun as Dragon Age: Origins, and the story is actually really good. I was not expecting as much emotional pathos and chuckle-worthy wittiness. The cast they got is also great and delivers outstanding performances.
The only downsides I can think of is the combat gets repetitive and there are some nasty bugs. Nothing game-breaking, but some sequences did have my PS4 lagging a little too much. There's also a glitch with collectables that is very irritating, but I managed to work my way around that for the platinum.
Overall, I had an actual blast with this one. It's a great experience that I doubt we'll ever get again. It's not as standout amazing as Marvel's Spider-Man, but it's a definite sleeper hit. A lesser masterpiece.