Full list of all 20 iStunt 2 (Windows) achievements worth 200 gamerscore. It takes around 8-10 hours to unlock all of the achievements on Windows.
Complete "Insane Hills" Pack.
Complete "Stadium Stunts" Pack.
Complete level after falling from the board.
Grab one token after death and then complete the level.
Collect all stars from one world.
Collect all stars from two worlds.
Perform five different stunts in a single combo.
Complete five levels without falling once.
Play for one hour straight.
Fly for seven seconds and land with style.
Collect 5,000 points with a single combo.
Collect 7,000 points with a single combo.
Collect 10,000 points with a single combo.
Unlock Grabs so you can perform Tail Grab, Nose Grab and Indy!
Complete "Insane Hills" Pack to unlock "Stadium Stunts".
Complete "Stadium Stunts" Pack to unlock "Extreme Skies".
Complete "Extreme Skies" Pack.
Complete "Desert Paradise" Pack.