If you can hang with it, WoFF is one of the best experiences you will have. Man alive, it is such a great flight simulator and campaign experience.
If you play solid Iron Man you will find yourself a very sad panda. You'll go 5, 10, 15 missions and be feeling invincible, and then one simple mistake and you're a flaming wreck.
No ejection seats. No parachutes. No second chances if you foul up.
You hit CTRL-E and the game laughs at you.