TLDR junky and clunky.
1) No key mapping, the controls stay the same even if you do remap the ones that you can find, even inverted controls setting doesn't work. The default controls are random, there is no logic behind their key binding e.g. G for flares and R for map.....
2) There is no way to disable the game music or lower the general volume, just like the controls, it doesn't care what you prefer.
3) The on-screen tips for example skipping a cutscene are playstation controller buttons (after furious random button mashing, skipping is F1!?) and there is a crapton of cutscenes (why didn't they just make 1 big cutscene instead of 8, each 20 seconds long in a row?) before every mission.
4) The graphics are no better than assault horizon 10 years prior to this one.
5) Gameplay wise the AI is horrible, on hard setting I find myself flying behind a jet that flies in a straight line.... no challenge. Not to mention the ludicrous concept of having a flight squadron of 4 engage 50 countries worth of airforces in every mission(???) before the 4th campaign mission you kill 200 jets, bankrupting any nation opposing you but nevermind that.
6) The plot is straight up ♥♥♥♥♥♥♥♥, I wouldn't care for that normally, but in this game the plot gets shoved in your face in the form of unending cutscenes, every person's grandma is on your radio distracting you the entire time you are dogfighting to inform you.... that there are enemies in the sky.... THANKS i WOULDN'T HAVE NOTICED, constant radio chatter.
7) Why do our highly advanced allies with cruisers equipped with the latest in anti-air defence never fire a single shot while at the same time getting hammered? are they museum pieces or something I missed in one of the hour long cutscenes?
8) Just a general remark here, this game should have stayed on console only, its a bad transition that looks like someone just straight up burned the CD of the game into their PC without even an emulator. This is just shameful.

In conclusion I heavily recommend not buying the game, if you need to for some reason, wait for it to cost $1 to justify the amount of work it took for that person to copy-paste this onto steam from their playstation library.