Here is the full list of all 20 Maggie the Magnet achievements.
Cling to a magnet point.
Manually skip any level by pressing an appropriate button.
Find a secret area.
Beat any level without picking up any gears.
Activate a moving magnet point.
Find a way to disable a fake wall.
Collect all 33 gears on one level page.
Attempt to befriend a spike.
Bounce off the same jump pad 5 times without restarting the level.
Destroy a box by pushing it into spikes.
Try what the laser tastes like.
Teleport 10 times on a single level.
Lick the ceiling spikes.
Destroy more than 3 propellers on a single level.
Collect 150 gears.
Meet your twin.
Gain full control over your body.
Disappear.
Get inside of the walls.
Destroy a block.