Here is the full list of all 13 iO Inner Self - there are The Lava Planet VR achievements.
Complete the game in easy mode
Complete the game in hard mode
Complete the game without receiving damage in hard mode
Complete the game without using the special attack in hard mode
Obtain 40,000 points in hard mode
Explore all of the house
Play 25 rounds in any difficulty
Finish round 5
Finish round 25 by only upgrading your HP
Finish round 25 by only upgrading your weapon damage
Finish round 15
Finish round 25
Finish round 50