Here is the full list of all 31 Idle Clans achievements.
Eat a burger in battle
Perform a leaderboard search
Purchase the most glamorous property available
Create a godlike item
Reach level 100 in a skill
Defeat a boss
Battle a monster with an Outstanding weapon
Grow some watermelons
Equip diamond jewellery
Enchant an item
Prepare a special dish
Purchase your first property. It's nothing to brag to your parents about, but it's a start.
Send an item to your clan's vault
Refine an item
Receive a boss key
Join a minigame
Create a clan
Defeat a dragon
Join a clan
Achieved upon reaching your first million
Purchase an upgrade
List an item for sale
Create silver jewellery
Plunder a small, helpless village
Your first level up
Complete the tutorial
Reach a billion gold
Reach max level in a skill
Steal from the royal clan
The true test for any respectable chef... Make a pizza.
Smith a piece of Astronomical armour