Here is the full list of all 38 Chromasia - there are Rock Paper Tactics achievements.
Complete chapter 1
Complete chapter 2
Complete chapter 3
Complete chapter 4
Complete chapter 5
Collect gold 5,000
Collect gold 1,000,000
Collect gold 10,000,000
Kill 50 enemies
Kill 200 enemies
Kill 500 enemies
Deal the final blow to 2 enemies with a single attack
Deal the final blow to 4 enemies with a single attack
Deal the final blow to 6 enemies with a single attack
Achieve Level 10 with any character
Achieve Level 25 with any character
Achieve Level 50 with any character
Achieve Level 100 with any character
Achieve Level 150 with any character
Achieve Level 200 with any character
Win mini game 10 times
Win mini game 50 times
Win mini game 100 times
Win mini game 150 times
Buy any equipment made of Unobtainium
Obtain 12 pieces of Unobtainium equipment
Collect gold 100,000
Receive all endings and beat the final boss at the highest level scale