Pretty dull and in my opinion, too damn hard.
Game looks fine, audio is good, it controls well, but the overall game is bland. It's just a grind fest that, other than a couple crashes, doesn't have any noteworthy bugs or glitches.
The big problems to me are the slow grind, and the, in my opinion, high difficulty. It's really easy to get pinned in a corner by the infinitely respawning enemies (particularly on defense sections), and of course being a Tom Clancy game, you take a lot of damage at the slightest tap.
Not a big fan of losing exp or characters if you lose, and not a big fan of characters staying hurt for half a dozen missions at a time. If the game had been more on par with Wildlands or The Division it might be ok, but it's just a more bland version of Siege.