No Expansion Packs Needed:
A*: Master the fishing skill and get to level 3 of handiness using children's playing blocks. Then complete all of the skill challenges of the fishing skill.
A: Master the fishing skill and get to level 3 of handiness using children's playing blocks. Then complete most of the skill challenges of the fishing skill.
A-: Master the fishing skill and get to level 2 of handiness using children's playing blocks. Then complete some of the skill challenges of the fishing skill.
B+: Master the fishing skill and get to level 1 of handiness using children's playing blocks. Then complete one of the skill challenges of the fishing skill.
B: Master the fishing skill.
B-: Reach level 9 of the fishing skill.
C+: Reach level 8 of the fishing skill.
C: Reach level 7 of the fishing skill.
C-: Reach level 6 of the fishing skill.
D+: Reach level 5 of the fishing skill.
D: Reach level 4 of the fishing skill.
D-: Reach level 3 of the fishing skill.
F: Reach level 2 or less of the fishing skill.
A: Master the fishing skill and get to level 3 of handiness using children's playing blocks. Then complete most of the skill challenges of the fishing skill.
A-: Master the fishing skill and get to level 2 of handiness using children's playing blocks. Then complete some of the skill challenges of the fishing skill.
B+: Master the fishing skill and get to level 1 of handiness using children's playing blocks. Then complete one of the skill challenges of the fishing skill.
B: Master the fishing skill.
B-: Reach level 9 of the fishing skill.
C+: Reach level 8 of the fishing skill.
C: Reach level 7 of the fishing skill.
C-: Reach level 6 of the fishing skill.
D+: Reach level 5 of the fishing skill.
D: Reach level 4 of the fishing skill.
D-: Reach level 3 of the fishing skill.
F: Reach level 2 or less of the fishing skill.