Here is the full list of all 23 Idling Gears achievements.
Have 100 Momma Gears at once
Unstuck a stucked gear
Have one gear of each type placed at the same time
Have 50 Lubing Gears at the same time
Ascend for the first time
Ascend 13 times
Ascend 50 times
Ascend 100 times!
Have a gear transmit over 9000 torque
Buy your first ascension upgrade
Buy 5 ascension upgrades
Buy 20 ascension upgrades
Buy all the ascension upgrades
zefor never lets you down
Hope it was worth it!