70:5 Bloody Storm (5), 1 Mirror Image (1), 1 Advanced Dark Sight (1), 1 Owl Spirit (1), 1 Upper Stab (1), 10+1 Flying Assaulter (11)
71:3 Bloody Storm (8)
72:2 Bloody Storm (10), 1 Mirror Image (2)
73:3 Mirror Image (5)
74:3 Mirror Image (8)
75:2+1 Mirror Image (11), 1 Flying Assaulter (12)
76:3 Flying Assaulter (15)
77:3 Flying Assaulter (18)
78:2 Flying Assaulter (20), 1 Tornado Spin (2)
79:3+1 Tornado Spin (6)
80:3 Tornado Spin (9)
81:3 Tornado Spin (12)
82:3 Tornado Spin (15)
83:3 Tornado Spin (18)
84:2 Tornado Spin (20), 1 Upper Stab (2)
85:3 Upper Stab (5)
86:3 Upper Stab (8)
87:3 Upper Stab (11)
88:3 Upper Stab (14)
89:3 Upper Stab (17)
90:3 Upper Stab (20)
91:3 Mirror Image (14)
92:3 Mirror Image (17)
93:3 Mirror Image (20)
94:3 Mirror Image (23)
95:3 Mirror Image (26)
96:3 Mirror Image (29)
97:1 Mirror Image (30), 2 Advanced Dark Sight (3)
98:3 Advanced Dark Sight (6)
99:3 Advanced Dark Sight (9)
100:3 Advanced Dark Sight (12)
101:3 Advanced Dark Sight (15)
102:3 Advanced Dark Sight (18)
103:2 Advanced Dark Sight (20), 1 Shadow Resistance (1)
104:3 Shadow Resistance (4)
105:3 Shadow Resistance (7)
106:3 Shadow Resistance (10)
107:3 Shadow Resistance (13)
108:3 Shadow Resistance (16)
109:3 Shadow Resistance (19)
110:1 Shadow Resistance (20), 2 Flashbang (3)
111:3 Flashbang (6)
112:3 Flashbang (9)
113:3 Flashbang (12)
114:3 Flashbang (15)
115:3 Flashbang (18)
116:2 Flashbang (20), 1 Nimble Body (1)
117:3 Nimble Body (4)
118:3 Nimble Body (7)
119:3 Nimble Body (10)
120:3 Nimble Body (13)
You're probably going to want 1 of each skill at the beginning, so go ahead and do that. Next, Flying Assaulter is your main attacking/mobbing move while training. Once you've done that, max Bloody Storm so you can chain it with Flying Assaulter. It's really nice and gives you full invincibility with both skills chained right. After that, Mirror Image at 11 has it hitting 41% compared to level 10's 30%, and it's the biggest jump in damage you're getting, so leave it at that for a while. Now it's time to finish up Flying Assaulter so it attacks 8 mobs just like Bloody Storm. Next, get Tornado Spin maxed as your other chain move with Flying Assaulter. The main difference between Tornado Spin and Bloody Storm is that TSpin rushes, while Storm doesn't. Time for Upper Stab. It is a very useful skill for both it's extra damage after launch and the fact that it is extremely fast. It's also a really good fininsher to spam after using FA+BS/TS combo. At this point, you've got all your main attack skills maxed out, so finish up Mirror Image to bring up your damage. I find Owl Dead an overall useless skill due to it's low damage, cooldown, single target, and its effect only activating when you OHKO a monster with the skill's own effect. The effect doesn't even last a long time anyways, it'll be about 10-15 seconds at max level, and nearly useless at bosses. So just leave it at 1, max out Advanced Dark Sight, Shadow Resistance, and Flash Bang. Flash Bang does work on bosses, which makes it extremely useful. -85% Accuracy at max level pretty much leaves you invincible for the 20 seconds it's in effect.