You need to fill the ones which must be solved 100%. I'll give you the levels but I won't fill the skills:
Tricky: 2, 19, 26
Taxing: 3, 8-11, 21-22, 30
Mayhem: 3-4, 6, 11-13, 16, 20-21, 24, 27-28.
Crazy: 2, 4-7, 9, 16.
Wild: 4, 6-9, 16-17.
Wicked: 2-3, 5.
Havoc: 3-6, 9, 11-12, 14, 19.
Xmas '91: 4.
Xmas '92: 3-4.
Frost: 1, 5, 9-11, 13.
Hail: 1, 7-16
Flurry: 1, 8, 13, 15
Blitz: 2-4, 6, 8, 10-11, 14.