Boy Overboard

Chapters 1& 2 — Complete the compulsory task, plus ONE optional task

Chapters 11-15 — Continue to add to the two compulsory tasks. Complete the only 'optional' task.

Chapters 3, 4, 5 & 6 — Complete the compulsory task + one optional task

Chapters 7, 8, 9 & 10 — You need to complete ONE task