EO2U/Ronin/Skills

This page details full data for the Ronin's skills in Etrian Odyssey 2 Untold: The Fafnir Knight. In addition to these skills, each character can equip Grimoire Stones which allow them to use skills from another class or monster. When a character equips a grimoire with a skill they have already learned, the level of the skill and the level of the grimoire are added together, meaning that a skill can have twice its maximum level.

Force skills

Immovable 不動
Support Skill: Force Boost For 3 turns, keep stances and reduce katana stance skills TP cost by half. Quietly focus. Stance turn count does not decrease, and Peerless Combination does not end the stance. While active, stance durations will not decrease, and Peerless Combo will not end Peerless Stance.

Issen 一閃
Attack Skill: Force Break Powerful ranged cut attack. May insta-kill. A concentrated slash that cuts all. Insta-kill chance raises against dying enemies. Damage scales based on the user's level. The instant kill chance is increased if the target is at or below 20% HP. Body part used: Arms Stat(s) used: STR, LUC
Level	1	2	3
Damage	400%	800%	1200%
Instant Kill Infliction Rate	100%
Instant Kill Infliction Rate (Enemy ≤20% HP)	999%
Activation Speed	90%

Katana Mastery branch

Katana Mastery 刀マスタリー
Support Skill: Mastery Enables Katana skills and increases damage dealt with katanas. Improve to learn new Katana skills. Does not stack with Blade Mastery.
Level	1	2	3	4	5	6	7	8	9	10
Katana ATK Increase	1%	2%	3%	4%	5%	6%	7%	8%	9%	10%
Level	11	12	13	14	15	16	17	18	19	20
Katana ATK Increase	10%	11%		12%		13%		14%		15%

Post-Initiative 後の先
Support Skill: Charge Raises evade rate & damage dealt next turn. Dodge the enemy's attack and counter. Will be canceled by other charge skills. The effects will be overwritten if the user uses another Charge skill. Body part used: Legs Prerequisite skill(s): Katana Mastery, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	3				6					10
Damage Multiplier	×1.40	×1.43	×1.46	×1.50	×1.53	×1.56	×1.60	×1.63	×1.66	×1.70
Evasion Increase	250				300					350
Activation Speed	200%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	10				12					14
Damage Multiplier	×1.71	×1.72	×1.73	×1.74	×1.75	×1.76	×1.77	×1.78	×1.79	×1.80
Evasion Increase	350				400					450
Activation Speed	200%

Perfect Chaser 阿吽の尾撃
Attack Skill: Katana/Stance Only Stance only: Perform a follow-up on an enemy hit by normal attack this turn. A melee cut attack with a katana. The follow-up activation rate lowers each time it activates. The follow-up attack uses the properties of the equipped weapon. Follow-up rate starts at 100% and decreases after every successful follow-up. Body part used: Legs Stat(s) used: STR Prerequisite skill(s): Katana Mastery, lv. 10
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	6				9					13
Damage	120%	122%	123%	125%		127%	128%	129%	130%
Maximum Follow-ups	3				4					5
Follow-up Rate Decrease	35%				25%					15%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	13				15					18
Damage	131%	132%	133%	134%	140%	141%	142%	143%	144%	155%
Maximum Follow-ups	5
Follow-up Rate Decrease	15%									0%

Upper Stance skills

Upper Stance 上段の構え
Support Skill: Katana/Stance Raises stance duration & ATK damage. At level 10, stance may activate at the start of battle. At Level 10 and up, Upper Stance may automatically activate at the start of battle, which increases its duration by 1 turn. Prerequisite skill(s): Katana Mastery, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
Physical ATK Increase	4%	6%	8%	10%		11%	12%	13%	14%	15%
Auto-activation Rate	0%									18%
Duration (Turns)	2				3
Level	11	12	13	14	15	16	17	18	19	20
Physical ATK Increase	15%	16%		17%		18%		19%		20%
Auto-activation Rate	20%		22%		24%		27%		30%	33%
Duration (Turns)	3

Upward Slash 逆袈裟
Attack Skill: Katana/Stance Melee cut attack. Take Upper Stance for 2 turns. An upward slash that leads into the Upper Stance. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Upper Stance, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	2				5					9
Damage	100%	106%	112%	118%	150%	157%	164%	171%	178%	210%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	9				11					13
Damage	214%	218%	222%	226%	250%	254%	258%	262%	266%	295%

Horse Slash 斬馬
Attack Skill: Katana/Upper Only Upper Stance only: Cut attack. A downward stroke of the katana. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Upper Stance, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	4				8					13
Damage	150%	157%	164%	171%	225%	233%	241%	249%	257%	320%
Activation Speed	90%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	13				15					18
Damage	323%	326%	329%	332%	360%	363%	366%	369%	372%	410%
Activation Speed	90%

Flame Grater 卸し焔
Attack Skill: Katana/Upper Only Upper Stance only: Fire + cut attack to a line of enemies. Brings down a katana wreathed in flames. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Horse Slash, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	8				12					17
Damage	160%	164%	168%	172%	195%	199%	203%	207%	211%	240%
Activation Speed	90%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	17				19					23
Damage	242%	244%	246%	248%	265%	267%	270%	272%	275%	300%
Activation Speed	90%

Swallow Strike ツバメがえし
Attack Skill: Katana/Upper Only Upper Stance only: Multiple cut attacks to 1 enemy. A katana skill that strikes on the return. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Upper Stance, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	10				15					22
Damage Per Hit	115%	117%	118%	120%		122%	123%	124%	125%
Minimum Attacks	2									3
Maximum Attacks	2				3
Hit Rate Modifier	-5				-4					-3
Activation Speed	80%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	22				25					28
Damage Per Hit	126%	127%	128%	129%	135%	136%	137%	138%	139%	150%
Minimum Attacks	3
Maximum Attacks	3
Hit Rate Modifier	-3
Activation Speed	80%

Clear Stance skills

Clear Stance 青眼の構え
Support Skill: Katana/Stance Raises stance duration & DEF. At level 10, stance may activate at the start of battle. At Level 10 and up, Clear Stance may automatically activate at the start of battle, which increases its duration by 1 turn. Prerequisite skill(s): Katana Mastery, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
Physical DEF Increase	4%	6%	8%	10%		11%	12%	13%	14%	15%
Auto-activation Rate	0%									18%
Duration (Turns)	2				3
Level	11	12	13	14	15	16	17	18	19	20
Physical DEF Increase	15%	16%		17%		18%		19%		20%
Auto-activation Rate	20%		22%		24%		27%		30%	33%
Duration (Turns)	3

Charging Thrust 貫突
Attack Skill: Katana/Stance Melee stab attack to 1 enemy. Take Clear Stance for 2 turns. A thrust that leads into the Clear Stance. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Clear Stance, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	2				5					9
Damage	100%	106%	112%	118%	150%	157%	164%	171%	178%	210%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	9				11					13
Damage	214%	218%	222%	226%	250%	254%	258%	262%	266%	295%

Arm Strike 小手討ち
Attack Skill: Katana/Clear Only Clear Stance only: Stab attack. May cause arm bind. A strike aimed at the enemy's hands. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Clear Stance, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	4				8					13
Damage	135%	142%	149%	156%	180%	187%	194%	201%	208%	240%
Arm Bind Chance	45%				57%					70%
Activation Speed	90%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	13				15					18
Damage	244%	248%	252%	256%	270%	274%	278%	282%	286%	310%
Arm Bind Chance	70%				75%					80%
Activation Speed	90%

Lightning Stab 雷耀突き
Attack Skill: Katana/Clear Only Clear Stance only: Stab + volt attack, pierces enemy lines. A lightning-quick stab through enemies in the front and back. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Arm Strike, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	7				10					14
Damage	190%	195%	200%	205%	230%	235%	240%	245%	250%	280%
Activation Speed	90%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	14				16					20
Damage	282%	285%	287%	290%	310%	313%	316%	319%	322%	350%
Activation Speed	90%

Moon Shadow 月影
Attack Skill: Katana/Clear Only Clear Stance only: Melee stab attack. Activates quickly. A strike too fast for the eyes. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Clear Stance, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	10				15					22
Damage	220%	226%	232%	238%	285%	291%	297%	303%	309%	360%
Hit Rate Modifier	+30
Activation Speed	300%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	22				25					28
Damage	362%	365%	367%	370%	390%	393%	396%	399%	402%	440%
Hit Rate Modifier	+30
Activation Speed	300%

Drawing Stance skills

Drawing Stance 居合いの構え
Support Skill: Katana/Stance Raises stance duration, speed, hit rate, & evade rate. At level 10, stance may activate at the start of battle. At Level 10 and up, Drawing Stance may automatically activate at the start of battle, which increases its duration by 1 turn. Prerequisite skill(s): Katana Mastery, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
Accuracy Increase	100	110	120	130		140	150	160	170	180
Evasion Increase	100	110	120	130		140	150	160	170	180
Action Speed Increase	20%	25%	30%	35%		40%	45%	50%	55%	60%
Duration (Turns)	2				3
Auto-activation Rate	0%									18%
Level	11	12	13	14	15	16	17	18	19	20
Accuracy Increase	180	190		200		210		220		230
Evasion Increase	180	190		200		210		220		230
Action Speed Increase	60%	65%		70%		75%		80%		85%
Duration (Turns)	3
Auto-activation Rate	20%		22%		24%		27%		30%	33%

Sheath Strike 鞘撃
Attack Skill: Katana/Stance Melee bash attack to 1 enemy. Take Drawing Stance for 2 turns. A sheath attack that leads into the Drawing Stance. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Drawing Stance, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	2				5					9
Damage	100%	106%	112%	118%	150%	157%	164%	171%	178%	210%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	9				11					13
Damage	214%	218%	222%	226%	250%	254%	258%	262%	266%	295%

Beheading Cut 首討ち
Attack Skill: Katana/Drawing Only Drawing Stance only: Cut attack. May insta-kill. A strike aimed at the enemy's neck. Body part used: Arms Stat(s) used: STR, LUC Prerequisite skill(s): Drawing Stance, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	4				8					13
Damage	135%	142%	149%	156%	180%	187%	194%	201%	208%	240%
Bind/ailment Chance	35%				45%					55%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	13				15					18
Damage	244%	248%	252%	256%	270%	274%	278%	282%	286%	310%
Bind/ailment Chance	55%				60%					65%

Frigid Slash 抜刀氷雪
Attack Skill: Katana/Drawing Only Drawing Stance only: Ranged cut + ice attack to all enemies. A slash with a blade coated in frost. If the user is under the effects of Compression, Frigid Slash's damage will increase, but it will still hit all enemies. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Beheading Cut, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	10				15					21
Damage	155%	158%	161%	164%	185%	188%	191%	194%	197%	225%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	21				23					28
Damage	227%	229%	231%	233%	250%	252%	254%	256%	258%	280%

Ground Strike 地走撃
Attack Skill: Katana/Drawing Only Drawing Stance only: Ranged bash attack to 1 enemy. A ground-hugging shockwave. Slow to activate. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Drawing Stance, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	10				15					22
Damage	230%	236%	242%	248%	295%	301%	307%	313%	319%	375%
Activation Speed	20%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	22				25					28
Damage	378%	381%	384%	387%	410%	413%	416%	419%	422%	460%
Activation Speed	20%

Peerless Stance skills

Peerless Stance 無双の構え
Support Skill: Katana/Stance Stance only: Enables all stance skills for 3 turns. Powers up according to levels of other stances. Cannot be extended by casting multiple times. Combines the effects of all three main stances the user knows, before adding its own bonuses Enables all skills requiring stances. Prerequisite skill(s): Swallow Strike, lv. 1 Moon Shadow, lv. 1 Ground Strike, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	3				5					7
Physical ATK Increase	10%	11%	12%	13%	17%	18%	19%	20%	21%	25%
Physical DEF Increase	5%	6%	7%	8%	12%	13%	14%	15%	16%	20%
Accuracy Increase	100	105	110	115	135	140	145	150	155	175
Evasion Increase	100	105	110	115	135	140	145	150	155	175
Action Speed Increase	20%	23%	26%	29%	41%	44%	47%	50%	53%	65%
Activation Speed	200%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	7									9
Physical ATK Increase	26%	27%	28%	29%	30%	31%	32%	33%	34%	40%
Physical DEF Increase	21%		22%		23%		24%		25%	30%
Accuracy Increase	175	180		185		190		195		210
Evasion Increase	175	180		185		190		195		210
Action Speed Increase	65%	68%		71%		74%		77%		85%
Activation Speed	200%

Peerless Combo 無双連撃
Attack Skill: Katana/Peerless Only Peerless Stance only: Ground Strike, Swallow Strike, and Moon Shadow. Stance ends after skill use. Must have Ground Strike, Swallow Strike, and Moon Shadow to use. Activates each skill in order, at their current respective levels, but with a damage penalty for each hit involved. Requires 56 skill points of investment (1 for Katana Mastery to unlock Stances, 4 in each Stance to unlock the combo's skills, 3 in Peerless stance to unlock Peerless Combo, 10 for each combo skill and 10 for this skill) to reach full potential. Ends Peerless Stance after use, unless Immovable is active. Each skill is treated as a separate action and grants its own share of Force increment. Body part used: Arms Stat(s) used: STR Prerequisite skill(s): Peerless Stance, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	10				13					17
Damage Decrease Per Hit	62%	61%	60%	59%	56%	55%	54%	53%	52%	50%
Activation Speed	20%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	17									22
Damage Decrease Per Hit	49%	48%	47%	46%	45%	44%	43%	42%	41%	39%
Activation Speed	20%

Phys ATK Up branch

Phys ATK Up 物理攻撃ブースト
Support Skill Raises physical ATK. Raises cut/stab/bash damage. Does not stack with elemental attack boosts.
Level	1	2	3	4	5	6	7	8	9	10
Physical ATK Increase	2%	3%	5%	6%	8%	9%	11%	12%	14%	15%
Level	11	12	13	14	15	16	17	18	19	20
Physical ATK Increase	15%	16%		17%		18%		19%		20%

Pre-Initiative 先の先
Support Skill Raises hit rate & damage against enemies who haven't acted yet. Prerequisite skill(s): Phys ATK Up, lv. 8
Level	1	2	3	4	5	6	7	8	9	10
ATK Increase	2%	3%	5%	6%	8%	9%	11%	12%	13%	15%
Accuracy Increase	100	120	140	160	180	200	220	240	260	280
Level	11	12	13	14	15	16	17	18	19	20
ATK Increase	15%	16%		17%		18%		19%		20%
Accuracy Increase	290	300	310	320	330	340	350	360	370	400

Standalone skills

HP Up HPブースト
Support Skill: Stat Up Raises maximum HP.
Level	1	2	3	4	5	6	7	8	9	10
MAX HP Increase	5%	7%	9%	11%	13%	14%	16%	17%	18%	20%
Level	11	12	13	14	15	16	17	18	19	20
MAX HP Increase	21%	22%	23%	24%	25%	26%	27%	28%	29%	30%

TP Up TPブースト
Support Skill: Stat Up Raises maximum TP.
Level	1	2	3	4	5	6	7	8	9	10
MAX TP Increase	5%	7%	9%	11%	13%	14%	16%	17%	18%	20%
Level	11	12	13	14	15	16	17	18	19	20
MAX TP Increase	21%	22%	23%	24%	25%	26%	27%	28%	29%	30%

Mine 採掘
Field Skill: Gathering Allows the user to find more resources at certain mining spots. While it is possible to create and equip a Grimoire Stone of this skill, it has no additional effect past Level 10.
Level	1	2	3	4	5	6	7	8	9	10
Mine Yield Increase	2%	4%	6%	8%	10%	12%	14%	16%	18%	20%
Activation Rate	0%	2%	4%	6%	10%	11%	12%	13%	14%	20%
Level	11	12	13	14	15	16	17	18	19	20
Mine Yield Increase	20%
Activation Rate	20%

References

• Datamining and tips for Ronin by DrFetus/Araxxor
• Common Passives Data by DrFetus/Araxxor
• Skill Data for Ronin by Hououin Makise/Rea
• Skill simulator