Here is the full list of all 40 Epic Clicker Journey achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Complete the first location
1.000 clicks
Enter the dungeon
Complete the map
Complete the multiplayer location
Open all closed locations
Open the locked location
Read information about authors
Use healing potion
Buy pet
Reach maximum level of weapon
Reach maximum level of armor
Reach maximum level of shield
Kill The Dragon
1.000.000 clicks
Kill 200 enemies
Deal 1 million damage
Escape from battle
Complete the map twice
Complete the map three times
Win gold using #LetsPlayAGame item
Use #BeMyBFF item
Drink water from fountain in dungeon
Reach level 10 of Dungeon on first map level
Reach level 25 of Dungeon on first map level
Reach level 50 of Dungeon on first map level
Reach level 100 of Dungeon on first map level
Reach level 7 of Dungeon on second map level
Reach level 13 of Dungeon on second map level
Reach level 21 of Dungeon on second map level
Reach level 69 of Dungeon on second map level
Reach level 5 of Dungeon on third map level
Reach level 15 of Dungeon on third map level
Reach level 30 of Dungeon on third map level
Reach level 50 of Dungeon on third map level
Reach player level 10
Reach player level 25
Reach player level 50
Reach player level 100
Loot #MuchTvWow item