My Fail DB Build

Rogue Skill Build
10: +1 Double Stab (1)
11: +3 Double Stab (4)
12: +1 Double Stab (5)
Save rest (26)

Skills so far:
Dark Sight: 0
Disorder: 0
Double Stab: 5
Nimble Body: 0

Semi-Dualer Skill build
20: +20 Mastery (20), +6 Booster (6)
21: +3 Booster (9)
22: +3 Booster (12)
23: +3 Booster (15)
24: +3 Booster (18)
25: +2 Booster (20), +1 Disorder (1)
26: +2 Disorder (3), +1 Dark Sight (1)
27: +3 Dark Sight (4)
28: +3 Dark Sight (7)
29: +3 Dark Sight (10)
30: +3 Nimble Body (3)

Skills so far:
Dark Sight: 10 (max)
Disorder: 3
Double Stab: 5
Nimble Body: 3
Katara Mastery: 20 (max)
Triple Stab: 0
Katara Booster: 20 (max)

Dualer Skill build
30: +1 Slash Storm (1)
31: +3 Self-Haste (3)
32: +2 Self-Haste (5), +1 Slash Storm (2)
33: +3 Slash Storm (5)
34: +4 Slash Storm (9 - 1 SP from SS mastery book)
35: +3 Slash Storm (12)
36: +3 Slash Storm (15)
37: +3 Slash Storm (18)
38: +3 Self-Haste (8)
39: +2 Self-Haste (10), +1 Fatal Blow (1)
40: +3 Fatal Blow (4)
41: +3 Fatal Blow (7)
42: +3 Fatal Blow (10)
43: +3 Fatal Blow (13)
44: +2 Fatal Blow (15), +1 Self-Haste (11)
45: +3 Self-Haste (14)
46: +3 Self-Haste (17)
47: +3 Self-Haste (20)
48: +2 Slash Storm (20), +1 Shadow Resistance (1)
49: +3 Shadow Resistance (4)
50: +3 Shadow Resistance (7)
51: +3 Shadow Resistance (10)
52: +3 Shadow Resistance (13)
53: +3 Shadow Resistance (16)
54: +3 Shadow Resistance (19)
55: +1 Shadow Resistance (20), +2 Nimble Body (5)

Skills so far:
Dark Sight: 10 (max)
Disorder: 3
Double Stab: 5
Nimble Body: 5
Katara Mastery: 20 (max)
Triple Stab: 0
Katara Booster: 20 (max)
Shadow Resistance: 20 (max)
Self-Haste: 20 (max)
Fatal Blow: 15
Slash Storm: 20 (max)

Blade Specialist Skill build
55: (None gained on job advance)
56: +1 Flash Jump (1), +2 Upper Stab (2)
57: +3 Upper Stab (5)
58: +3 Upper Stab (8)
59: +3 Upper Stab (11)
60: +3 Upper Stab (14)
61: +3 Upper Stab (17)
62: +3 Upper Stab (20)
Save SP (24)

Skills so far:
Build 1:
Dark Sight: 10 (max)
Disorder: 3
Double Stab: 5
Nimble Body: 5
Katara Mastery: 20 (max)
Triple Stab: 0
Katara Booster: 20 (max)
Shadow Resistance: 20 (max)
Self-Haste: 20 (max)
Fatal Blow: 17
Slash Storm: 20 (max)
Tornado Spin: 0
Flash Bang:
Flash Jump: 1
Upper Stab: 20 (max)

Blade Lord Skill build
70: +10 Bloody Storm (10), +11 Flying Assaulter (11 - 1 SP from FA mastery book), +5 Mirror Image
71: +3 Mirror Image (8)
72: +4 Mirror Image (12 - 1 SP from MI mastery book)
73: +3 Tornado Spin (3)
74: +4 Tornado Spin (7 - 1 SP from TS mastery book)
75: +3 Tornado Spin (10)
76: +3 Tornado Spin (13)
77: +3 Tornado Spin (16)
78: +3 Tornado Spin (19)
79: +1 Tornado Spin (20), +2 Flying Assaulter (13)
80: +3 Flying Assaulter (16)
81: +3 Flying Assaulter (19)
82: +1 Flying Assaulter (20), +2 Mirror Image (14)
83: +3 Mirror Image (17)
84: +3 Mirror Image (20)
85: +3 Mirror Image (23)
86: +3 Mirror Image (26)
87: +3 Mirror Image (29)
88: +1 Mirror Image (30), +2 Flash Jump (3)
89: +3 Flash Jump (6)
90: +3 Flash Jump (9)
91: +3 Flash Jump (12)
92: +3 Flash Jump (15)
93: +3 Vital Steal (3)
94: +3 Vital Steal (6)
95: +3 Vital Steal (9)
96: +1 Vital Steal (10), +2 Fatal Blow (19)
97: +3 Fatal Blow (22)
98: +2 Fatal Blow (25), +1 Advanced Dark Sight (1)
99: +3 Chains of Hell (3)
100: +3 Chains of Hell (6)
101: +3 Chains of Hell (9)
102: +4 Chains of Hell (13 - 1 SP from CoH mastery book)
103: +3 Chains of Hell (16)
104: +3 Chains of Hell (19)
105: +1 Chains of Hell (20), +2 Advanced Dark Sight (3)
106: +3 Advanced Dark Sight (6)
107: +3 Advanced Dark Sight (9)
108: +1 Advanced Dark Sight (10), +2 Flash Bang (2)
109: +3 Flash Bang (5)
110: +3 Nimble Body (11)
111: +3 Nimble Body (14)
112: +3 Nimble Body (17)
113: +3 Nimble Body (20)
114: +3 Owl Spirit (3)
115: +3 Owl Spirit (6)
116: +3 Owl Spirit (9)
117: +3 Owl Spirit (12)
118: +3 Owl Spirit (15)
119: +3 Owl Spirit (18)
120: +2 Owl Spirit (20), 1 Spare

Skills so far:
Dark Sight: 10 (max)
Disorder: 3
Double Stab: 5
Nimble Body: 20 (max)
Katara Mastery: 20 (max)
Triple Stab: 0
Katara Booster: 20 (max)
Shadow Resistance: 20 (max)
Self-Haste: 20 (max)
Fatal Blow: 15
Slash Storm: 20 (max)
Tornado Spin: 20 (max)
Flash Bang: 5 (max)
Flash Jump: 15 (max)
Upper Stab: 20 (max)
Bloody Storm: 10 (max)
Advanced Dark Sight: 10 (max)
Vital Steal: 10 (max)
Mirror Image: 30 (max)
Owl Spirit: 20 (max)
Chains of Hell: 20 (max)
Flying Assaulter: 20 (Max)

Blade Master Skill Build
Level 120: 1 Thorns, 1 Blade Fury, 1 MT
Level 121: 1 Phantom Blow, 2 Sharpness
Level 122: 3 Sharpness
Level 123: 3 Sharpness
Level 124: 2 Sharpness, 1 Thorns
Level 125: 3 Thorns
Level 126: 3 Thorns
Level 127: 3 Thorns
Level 128: 3 Thorns
Level 129: 3 Thorns
Level 130: 3 Thorns
Level 131: 3 Blade Fury
Level 132: 3 Blade Fury
Level 133: 3 Blade Fury
Level 134: 3 Blade Fury
Level 135: 3 Blade Fury
Level 136: 3 Blade Fury
Level 137: 1 Blade Fury, 2 Thorns
Level 138: 3 Thorns
Level 139: 3 Thorns
Level 140: 1 Thorns, 2 Final Cut
Level 141: 3 Final Cut
Level 142: 3 Final Cut
Level 143: 3 Final Cut
Level 144: 3 Final Cut
Level 145: 3 Final Cut
Level 146: 3 Final Cut
Level 147: 3 Final Cut
Level 148: 3 Final Cut
Level 149: 1 Final Cut, 2 Blade Fury
Level 150: 3 Blade Fury
Level 151: 3 Blade Fury
Level 152: 1 Blade Fury, 2 Phantom Blow or 2 Mirror Target/2 Venom


Stolen from:
http://www.basilmarket.com/MapleStory-Guide-Ultimate-Dual-Blade-guide-314.html
And also:
http://www.basilmarket.com/forum/1941926/