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