Nothing special
I just put 1700 points or so into the wiki for this, so it seems only reasonable to add a review and get all subjective about it, right?
Frankly, while I like flight sims, and sims in general, this is the first arcadey flight combat game I've played recently (no Ace Combat, no HAWX, no... whatever the other options are). But it was cheap and the screenshots looked okay and I like flying games, so how bad could it be?
Result: not that bad. But not amazing. The singleplayer isn't terrible long, and keeps fresh by continually unlocking more planes with better weapons, and there's enough variation that you don't end up in a loop playing every mission exactly the same way. Plus it's fully voice-acted (some voices better than others) and the player's character actually has a personality! Not much of one, but a bit of banter every now and then is better than having someone who silently and unquestioningly follows orders.
Since I've not really played anything in this genre before I can't say much about the gameplay. It's not at all realistic, and when fighting the AI I never had to get too tactical - just fly around and turn a lot and fire missiles whenever I locked onto something. The cannon is too fiddly to bother with (at least with a gamepad) and your plane has enough health and checkpoints that evasion isn't really that important. Enemies spawn infinitely on some missions, but not all, and it never felt like the game was cheating. The occasional objective of "protect X" got close though, since there was no way of knowing how long they'd last and efficiently dispatching enemies just meant the next ones came sooner.
There's not much replayability in the campaigns, since I don't think it has a high score system, and once you unlock better planes/weapons (like ones that lock on more than twice as far as the enemy vehicles can) they get a little trivial. The graphics aren't also that amazing, but you don't tend to pay much attention to them if you can even see things (targets 10 km away aren't going to be very big at any resolution).
I didn't bother trying to get a multiplayer game going. I can't imagine there's many people playing it.