Here is the full list of all 37 Songbringer achievements.
Complete the game in under 2.5 hours.
Complete the game without the sword.
Unlock all achievements.
Complete the game without buying any items.
Complete the game with any percentage of items.
Complete the game with 100 percent items.
Complete the game with 100 percent map.
Complete the game in permadeath mode.
Meditate or use a cactus to find a secret.
Kill every kind of enemy at least once.
Craft the Flamethrower.
Interact with every NPC.
Craft the Hyper Boots.
Complete the Trial of Ren.
Finish the ninth dungeon.
Play the game at 11:11 AM or PM
Kill four or more enemies at once.
Finish the eighth dungeon.
Clear a difficult dungeon of all enemies.
Finish the seventh dungeon.
Finish the sixth dungeon.
Finish the fifth dungeon.
Gain the power to meditate during battle.
Have less than 1 courage after vanquishing a boss.
Finish the fourth dungeon.
Buy an item from a store.
Combine two items at the Droidsmith.
Perform 50 charge attacks.
Open a secret wall.
Speak friend and enter.
Walk a secret path.
Finish the third dungeon.
Finish the second dungeon.
Finish the first dungeon.
Clear an easy dungeon of all enemies.
Enter any dungeon.
Wield the nanosword.