Okay, this will be a bit sparse, but no one remade the thread for 30 minutes so...
Metacritic: 71 (16 reviews)
IGN - 5.9/10
Kotaku
Destructoid - 5.5/10
DualShockers - 7/10
Eurogamer - Blank Tag
Godisa Geek - 7/10
Game Explain - Liked-A-Lot
Attack of the Fanboy - 3.5/5
Nintendo Enthusiast - 4.5/10
Nintendo Life - 8/10
Gaming Nexus - 8/10
Nintendo Everything - Thumb Sideways
Nintendo World Report - 9/10
Metacritic: 71 (16 reviews)
IGN - 5.9/10
Metroid Prime: Federation Force has some neat ideas, but they’re soured by an impotent and boring primary weapon that sucks the enjoyment out of shooting and a bewildering lack of special ammunition that might’ve brought variety to the action. Due to a painfully imbalanced single-player experience co-op with friends is really the only viable way to play it, and even then it’s not really recommended.
Kotaku
There’s little overlap in content or gameplay between Metroid Prime Federation Force and another recent release, the PS4 and PC game No Man’s Sky. There is, though, a mirrored case study in expectations, so low for the former and so high for the latter. Both have arrived differently than forecast. One is still cooling off from overheated hopes, settling in with an audience that may like the game for what it is rather than what they hoped it would be. Federation Force benefits from comparatively low expectations. While it may not be a classic Metroid, it proves to be the kind of strategic shooter not seen from Nintendo before. Its designers enter such uncharted territory with aplomb, and the resulting game is one of the most pleasant surprises of the season.
Destructoid - 5.5/10
I was holding out hope for Metroid Prime: Federation Force, but at this point, there are so many other dungeon crawlers that are worth your time. Just like Hunters on the original DS, the main questline of Federation will probably fade out of the limelight over time and become a whisper in hardcore Metroid crowds -- though I can see Blast Ball having longer legs.
DualShockers - 7/10
Hidden underneath the wonky control scheme and irreverent use of the source material, Metroid Prime: Federation Force is overall a good game, held back by limitations of the console as well as bizarre design choices. Fans of FPS’s will likely enjoy not only the experimentation the game has to offer, but also the fun you will find with friends.
Eurogamer - Blank Tag
Which gets to a core problem with Federation Force, a game that's quick to strip away the fundamentals of Metroid but doesn't quite find enough to fill the void that's left. There's a spark missing, and while this spin-off is competent it's never quite convincing. Metroid Prime Federation Force is okay, and for a series that's been away for so long and a game that boldly chooses to bear the Prime moniker that doesn't feel like it's going to be enough.
By a process of simple inversion Nintendo's done some wonderful things with its staple series in the past. A Mario game without any jumping? Tokyo EAD's Captain Toad's Treasure Tracker proved there's plenty of magic and a fair few surprises to be found when Nintendo is working with one hand tied behind its back. Metroid without Samus, without that sense of exploration and lonely adventure? It's a much tougher ask, and while the best efforts of Next Level Games have ensured an enjoyable off-shoot it was perhaps only inevitable that Federation Force would end up falling a little short.
Godisa Geek - 7/10
Ultimately, Federation Force isn’t really a Metroid game at all, then, but it is a relatively fun game that is actually quite enjoyable once you stop thinking about what it isn’t, and enjoy it with some friends online.
Game Explain - Liked-A-Lot
If you're interested at all in a 3DS shooter with impeccable mission variety that you can enjoy with your friends, then I feel Federation Force is well worth your time.
Attack of the Fanboy - 3.5/5
Metroid Prime: Federation Force's greatest crime was its name. Had the game not tagged itself with the moniker of one of the greatest games of all time, it could have stood on its own merits quite well. If you take all those pre-conceived notions of what a Metroid game should be and set them aside, Metroid Prime: Federation Force will easily surprise you with its quality. It's nowhere near the all time greats, but it can deliver some enjoyable moments, and will definitely entertain for some time. Just make sure you have some friends to tag along though, because the solo experience is quite a different story.
Nintendo Enthusiast - 4.5/10
Metroid Prime: Federation Force is not a good game at all. When you find yourself just wanting to complete levels to see if the game ever changes and gets better, that’s a sign that something is very wrong. The core gameplay is simplistic, boring, and not the level of quality one would expect from a Metroid game.
Nintendo Life - 8/10
Despite the undue hate it has been subjected to over the past year, Metroid Prime: Federation Force is a very impressive, polished and playable package - the only real grumble we have is that during online play the lack of voice chat can become maddening, and the game's built-in chat function is an inadequate substitute. This aside, Next Level Games has treated the franchise with the respect that it deserves while successfully attempting to bring co-op multiplayer to the world of Samus Aran.
Gaming Nexus - 8/10
Metroid Prime: Federation Force is enjoyable once you learn the controls, but it feels like it was more geared towards multiplayer. [...] As long as you don’t mind the exploration aspect of the series removed and replaced with linear missions, fans of the series should enjoy Federation Force.
Nintendo Everything - Thumb Sideways
While I didn’t love Metroid Prime: Federation Force, I definitely did enjoy the game as I found myself sinking into it more. The gameplay felt a bit boring during long sessions and I was unable to play with anyone I knew personally, but finding people online randomly and essentially using sign language to express myself to each player was fun.
For die-hard Metroid fans, Federation Force can be hard to recommend. There aren’t too many similarities to the main series, but there’s just enough here to make it worthwhile for those looking for a unique multiplayer experience to fill their fall season. Mixed overall gameplay, decent visuals, and nice sound design don’t make the title groundbreaking by any means. It’s just unique enough where I can forgive the little things and invest myself in the experience for a short period.
Nintendo World Report - 9/10
Metroid Prime: Federation Force is absolutely a Metroid Prime game. It incorporates fresh ideas and presents them in unique ways, but it never forgets where it comes from. The co-op online shooter genre is a bold new venture for Nintendo, and one they’ve taken to with surprising aptitude. The odd lack of a retry button ads a noticeable hiccup to an otherwise wonderful experience, but it is one that is easily overcome with a little patience. The default controls improve upon those of the original Prime games brilliantly. All of this is wrapped up in a fantastic presentation that will keep you locked into the game’s story until the very end. Metroid Prime: Federation Force is, without a doubt, one of my favorite 3DS games of all time.