Here is the full list of all 80 Idle Campaign achievements.
Kill 2000 Bosses
Kill 300 Bosses
Kill 750 Bosses
Find 25 Candles
Find 75 Candles
Enhance Armor 1000 Times
Gather 1e255 Ore
Reach Enemy Level 750
Enhance Armor 750 Times
Kill 150 Bosses
Reach Enemy Level 500
Gather 1e171 Ore
Enhance Armor 300 Times
Enhance Armor 500 Times
Reach Enemy Level 400
Click 100000 Times
Click 500000 Times
Gather 1e114 Ore
Reach Enemy Level 200
Reach Enemy Level 300
Gather 1e75 Ore
Gather 1e51 Ore
Kill 25 Bosses
Kill 75 Bosses
Gather 1e36 Ore
Reach Enemy Level 100
Gather 1e24 Ore
Reach Enemy Level 50
Gather 1e15 Ore
Enhance Armor 150 Times
Click 25000 Times
Click 5000 Times
Enhance Armor 75 Times
Gather 1e6 Ore
Reach Enemy Level 15
Click 1000 Times
Enhance Armor 10 Times
Click 100 Times
Collect 10 Runes
Collect 25 Runes
Collect 100 Runes
Collect 250 Runes
Collect 500 Runes
Collect 750 Runes
Collect 1000 Runes
Collect 1800 Runes
Collect 2500 Runes
Collect 3000 Runes
Enhance Armor 1250 Times
Enhance Armor 1500 Times
Enhance Armor 2000 Times
Click 1,000,000 Times
Click 5,000,000 Times
Click 10,000,000 Times
Click 50,000,000 Times
Kill 5000 Bosses
Kill 10000 Bosses
Kill 25000 Bosses
Kill 50000 Bosses
Find 150 Candles
Find 300 Candles
Find 1000 Candles
Find 2000 Candles
Find 400 Candles
Find 8000 Candles
Find 16000 Candles
Find 24000 Candles
Gather 1e384 Ore
Reach Enemy Level 1000
Reach Enemy Level 2000
Turn In 5 Tasks
Turn In 30 Tasks
Turn In 75 Tasks
Turn In 150 Tasks
Turn In 300 Tasks
Turn In 800 Tasks
Turn In 1500 Tasks
Turn In 3000 Tasks
Turn In 6000 Tasks
Turn In 10000 Tasks