From Lineage 2 Encyclopaedia

Properties

Two-handed Weapon Mastery
Increases P. Atk. by 4.5 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.
Class	Destroyer
Type	passive
Attribute	-
Recast time	0 s
Cast time	0 s
Cast range	0
Classes with same skill	Raider, Destroyer, Titan

Skill Upgrade

Lvl. to Learn	Skill Lvl.	Description	MP Consume	HP Consume	SP
20	1	Increases P. Atk. by 4.5 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	4
24	2	Increases P. Atk. by 7.3 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	6
28	3	Increases P. Atk. by 10.7 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	7
32	4	Increases P. Atk. by 15.1 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	10
36	5	Increases P. Atk. by 20.5 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	13
40	6	Increases P. Atk. by 27.1 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	28
43	7	Increases P. Atk. by 32.9 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	31
46	8	Increases P. Atk. by 39.4 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	51
49	9	Increases P. Atk. by 46.6 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	68
52	10	Increases P. Atk. by 54.6 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	79
55	11	Increases P. Atk. by 63.3 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	89
58	12	Increases P. Atk. by 72.7 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	154
60	13	Increases P. Atk. by 79.3 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	194
62	14	Increases P. Atk. by 86.1 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	266
64	15	Increases P. Atk. by 93.1 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	295
66	16	Increases P. Atk. by 100.2 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	406
68	17	Increases P. Atk. by 107.5 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	632
70	18	Increases P. Atk. by 114.8 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	940
72	19	Increases P. Atk. by 122.1 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	997
74	20	Increases P. Atk. by 129.3 and Accuracy by 3 when using a two-handed sword or a two-handed blunt weapon.	0	0	1428