Here is the full list of all 8 WEscape achievements.
Complete the level "The Royal We."
Complete "The Royal We" in under 10 minutes.
Complete the level "Iscape."
Complete "Iscape" in under 15 minutes.
Complete the level "Four Whom the Bell Tolls."
Complete "Four Whom the Bell Tolls" in under 20 minutes.
Complete the level "From Me Two You."
Complete "From Me Two You" in under 30 minutes.