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