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