Dark Void

The prologue is the intro scene where you fly around in the jetpack and fight UFOs. It's pretty hard to not complete the prologue. Just try to shoot as many UFOs down as you can. If you can nail 5 of them, you'll earn the Mark of the Adept achievement. After the battle there will be a cutscene and the achievement will unlock.

4 achievements are unlocked in this youtube video link - of dark void game = in the order of unlocking with the CLOCK TIME writing =
-- achievement 1 - "" PROLOGUE "" is unlocked after learning at the start , to fly with your jetpack = achievement unlocked at 7 MINUTES AND 30 SECONDS - of this YOUTUBE VIDEO
-- achievement 2 - "" DEAR DIARY "" is unlocked in the YOUTUBE VIDEO at 26 MINUTES AND 16 SECONDS
-- achievement 3 - "" BLUE LIGHT SPECIAL "" is unlocked at the end of the VIDEO at 28 MINUTES AND 20 SECONDS
-- achievement 4 - "" CRASH SITE "" is unlocked at the end of the VIDEO at 37 MINUTES AND 16 SECONDS