Here is the full list of all 12 Welcome To The Dreamscape achievements.
Complete Chapter 1.
Complete Chapter 2.
Complete Chapter 3.
Complete Chapter 4.
Complete Chapter 5.
Complete Chapter 6.
Complete Chapter 7.
Complete Chapter 8 (Ending 1).
Complete Chapter 8 (Ending 2).
I hope your parents are proud.
Complete the game without using any health pickups.
Get Up.