Here is the full list of all 23 Candle achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Complete Act 3
Ignite all the fire spots throughout the adventure
Try to confront the monster on your own
Fire is not always your ally
This rings a bell...
A mother always protects her children
Complete Act 2
Remember to turn off your candle while you are hidden
Jump over a Wakcha
Your candle is not THAT powerful
Jumping is not always possible
Monkeys don't want to be disturbed
Complete Act 1
Drop from a high spot and stay alive
Use the light burst power of your candle to unveil a hidden painting
Escape from a chasing Wakcha
Think carefully how to protect yourself from that rock
Your journey is just beginning...
I'm sure this is not what you wanted to do here...
Win the game and do not lose more than 1 token
Spread the blue fire as much as possible
Fall into the same trap twice
Survive underwater for over a minute