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