Here is the full list of all 37 Songbringer achievements.
Finish the second dungeon.
Meditate or use a cactus to find a secret.
Walk a secret path.
Have less than 1 courage after vanquishing a boss.
Clear an easy dungeon of all enemies.
Finish the first dungeon.
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.
Interact with every NPC.
Kill four or more enemies at once.
Kill every kind of enemy at least once.
Unlock all achievements.
Speak friend and enter.
Open a secret wall.
Combine two items at the Droidsmith.
Clear a difficult dungeon of all enemies.
Complete the game without buying any items.
Finish the third dungeon.
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.
Perform 50 charge attacks.
Craft the Hyper Boots.
Craft the Flamethrower.