Just completed the campaign and must say this is a very well done game, solid 5/5 as my complains are trivial compared to the quality of everything else.
It does take a bit of investment to get into as the ships have A LOT of controls which is just plain confusing and disorienting until you get the hang of it, but the depth when you do is impressive.
The story is also surprisingly deep and well thought out (and long in a good way). The maps in each segment of the game are quite small with not a lot to do besides fight (you could say it is designed around pure tactics with no strategy) but that aspect is so well done that I wasn't bothered by it.
A complaint I do have is that restarting when dying in the campaign is often annoying because it sends you through the dialogue each time. There is an option to skip the dialogue, but it only skips a section, if there are multiple (with camera animations between), you have to wait until the next pops up to skip it, so it can take many seconds to retry (which might not sound like much but when you are on a difficult mission with lots of dying, it is quite frustrating). On top of that, the loading of each mission is quite slow, and something as simple as returning to the hanger to switch ships for trying another approach requires waiting for the loading again despite your ship being the only thing that changed.
I also experienced frustration many times with the turret deployables that cause friction as well as those that grab hold of your ship. These can cause you to get "stuck" in the middle of a huge swarm of opponents, putting you at nearly hopeless odds with very little you can do, so I think the presence of these "weapons" does more to detract than enhance the game, though with enough experience you would probably learn whatever subtle tricks are needed to avoid them.
Overall, though, very high quality, very well thought out, lots of depth, and plenty of fun to play, certainly a gem to have found.
I haven't played multiplayer but I would imagine it would work very well with the design of this game.