Here is the full list of all 20 Dojoran - there are Steam Edition achievements.
Finish the game as a coward.
Finish the game as a villain.
Finish the game as a hero.
Finish the game as a fly maniac.
Finish the game as a frog.
Get your first talisman.
Get half of the game coins.
Get all the game coins.
Kill the boss.
Kill a peaceful slug.
Kill a peaceful bird.
Beat the apple challenge.
Try to trick the giant stone.
Die 200 times.
Die 400 times.
Save a fly.
Save all flies.
Get all talismans.
Finish the game in less than 1 hour.
Obtain all achievements.