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