- Estimated achievement difficulty: 3/10 [Achievement Difficulty Rating]
- Offline: 58 
- Online: 0
- Approximate amount of time to 1000: 20-30 hours [Estimated Time to 100%]
- Minimum number of playthroughs needed: 1
- Missable achievements: None are truly missable because of Chapter Select, but Galactic Frugality (15G) spans numerous chapters, and if you mess it up you risk needing to replay a significant portion of the game
- Does difficulty affect achievements: No - all achievements can be unlocked on Easy
- Unobtainable/glitched achievements: None
Welcome to Guardians of the Galaxy, a third person action-adventure game that is largely narrative driven, but full of big fights too. Note that this game is not related to the Marvel movies nor to the Telltale game. It is a standalone game about the Guardians, but with many familiar characters. Be prepared for an interesting and engaging story, an awesome soundtrack, big battles, epic boss fights, and more. Despite the huge number of achievements, a whopping 30 of them are story related and can't be missed, with a few more essentially story related since you'll unavoidably end up unlocking them. There are a few achievemnts related to collectibles, and then a bunch of combat achievements. While there is Chapter Select and therefore no achievements are missable, you can save yourself quite a bit of time by keeping an eye on certain things. More on that below; let's get started.
As noted above, while no achievements are technically missable, the first and most important achievement to be aware of is Galactic Frugality (15G) because it spans so many chapters. You'll unavoidably get fined by Nova Corps in Chapter 2, but you'll then need to ensure you collect enough units in Chapter 4, ensure you don't spend too many in Chapter 6 so you still have enough for your fine, and then ensure you actually select the options in Chapter 9 to pay off that fine. There isn't anything difficult about it, just don't forget about it as you progress.
The next thing to note are collectibles. There are essentially four types of collectibles in this game:
- Outfits - There are 30 non-story ones and you must find all of them. A video guide is located in Fashion Passion (30G)
- Archives - There are 42 of them but you only need to find 28 (i.e. 65%) for Lore Hoarder (30G). A video guide is available in Managerial Skills (30G)
- Guardian Collectibles - There are 15 but you only need a total of 8 and all of one Guardian's collectibles. Managerial Skills (30G) has more information and a video guide
- Items - There are 7 Items that aren't story related, and you actually don't need to collect any of them for any achievements (there are enough story-related ones and Guardian Collectibles to cross the 65% threshold)
With that out of the way, the final type of achievements is combat achievements. There are many of them, many of which are only available in a select chapter or after a certain chapter. There are also a couple miscellaneous achievements in specific chapters. To save you chapter replay, here is a quick breakdown of which chapters have achievements tied to them, so you can jump to them in the guide when you get to that chapter.
Eat It, Rodent (15G)
Galactic Frugality (15G) (Part 1)
Galactic Frugality (15G) (Part 2)
Galactic Frugality (15G) (Part 3)
No Way, Nova Corps (15G)
Drax the Dismemberer (15G) (First of many opportunities)
Galactic Frugality (15G) (Part 4)
Groot Canal (15G) (First opportunity)
Boom Show (15G) (First becomes available)
Adding Injury to Insult (15G) (First becomes available)
Trained to Perfection (15G) (First becomes available)
Groot Canal (15G) (Second opportunity)
Herbal Remedy (15G) (First becomes available)
And that's really all of the information you need. Enjoy the story - you will get the vast majority of the achievements naturally as you play. Following the video guides for the collectibles might sound annoying, but they'll save you a decent amount of time and they don't contain any spoilers. If you miss anything, you can use Chapter Select from the main menu to go back and get any achievements, collectibles, etc.
Guardians of the Galaxy is a surprisingly good game, which I think most people weren't expecting. It has a great and pretty lengthy story, tons of good dialogue, the usual hilarious banter and exchanges you can expect from these characters, an awesome song list that you'd come to expect from Peter Quill, epic boss fights, and some very fun combat that really becomes much more enjoyable as you unlock more and more abilities as you progress. The collectibles aren't too bad, in my opinion, since not too many are required for achievements and you have some leeway, plus the Outfits, which are all required, make your Guardians look pretty cool. I definitely recommend this game to any Marvel fans, as you'll certainly feel like you're playing through a full-blown Guardians adventure. Hopefully you enjoyed the game and congrats on the completion!