Here is the full list of all 11 入替人-ReplaceR- achievements.
When you get the ability to switch.
When you clear a stage with a parabola.
When you clear a stage that bounces.
When you clear the stage to change the position.
When you complete a stage that swaps.
The one who activated the four types of keys.
When you get the barrier.
When the seal gimmick is removed.
When you have completed the game once.
Clear within 20 minutes.
No Continue Clear.