Here is the full list of all 14 Pentomino achievements.
Achive all episide of section C
Achive all episide of section B
Achive all episide of section A
Achive all episide of section D
Achive all episide of section E
Achive all episide of section F
Achive all episide of section G
Achive all episide of section H
Achive all episide of section I
Achive all episide of section J
Achive all episide of section K
Achive all episide of section L
Achive all episide of section M
Achive all episide of section N