EO2U/Gunner/Skills

This page details full data for the Gunner'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

Action Boost アクトブースト
Support Skill: Force Boost For 3 turns, gun skills will activate twice. With quick reload skills, shoot 2 shots at once. The second shot will be weaker. The second shot's power (damage/healing power) will be decreased.
Level	1
Second Shot Power Decrease	40%

Supreme Bolt 至高の魔弾
Attack Skill: Force Break Powerful ranged stab attack to 1 enemy. High chance of stun. Shoot the enemy with the ultimate bullet. The target will always be stunned, unless they are immune to it. Damage scales based on the user's level. Body part used: Arms Stat(s) used: AGI
Level	1	2	3
Damage	600%	1300%	2100%
Activation Speed	200%

Gun Mastery branch

Gun Mastery 銃マスタリー
Support Skill: Mastery Enables Gun skills and increases damage dealt with guns. Improve to learn new Gun skills.
Level	1	2	3	4	5	6	7	8	9	10
Gun ATK Increase	1%	2%	3%	4%	5%	6%	7%	8%	9%	10%
Level	11	12	13	14	15	16	17	18	19	20
Gun ATK Increase	10%	11%		12%		13%		14%		15%

Medic Bullet ドラッグバレット
Healing Skill: Gun Removes 1 ally's ailments and restores their HP. Fires a bullet with healing properties. Body part used: Arms Stat(s) used: TEC, VIT Prerequisite skill(s): Gun Mastery, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	5				7					10
HP Recovery (Base Value)	100	105	110	115	170	177	184	191	198	290
Activation Speed	90%				105%					120%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	10				12					15
HP Recovery (Base Value)	297	304	311	318	360	367	374	381	388	470
Activation Speed	120%				150%

Fire Rounds フレイムショット
Attack Skill: Gun Ranged stab + fire attack to 1 enemy. Fires a special bullet imbued with fire. Body part used: Arms Stat(s) used: AGI Prerequisite skill(s): Gun Mastery, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	5				8					13
Damage	130%	135%	140%	145%	185%	190%	195%	200%	205%	255%
Hit Rate Modifier	-2
Activation Speed	70%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	13				16					20
Damage	258%	261%	264%	267%	285%	288%	292%	295%	299%	325%
Hit Rate Modifier	-2
Activation Speed	70%

Charged Fire チャージフレイム
Attack Skill: Gun Line-piercing ranged stab + fire attack. DEF lowered until activation. Takes time to carefully aim a special bullet imbued with fire. Body part used: Arms Stat(s) used: AGI Prerequisite skill(s): Fire Rounds, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	15				20					25
Damage	185%	191%	197%	203%	240%	246%	252%	258%	264%	310%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	25				27					30
Damage	313%	316%	319%	322%	340%	343%	347%	350%	354%	380%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%

Ice Rounds アイスショット
Attack Skill: Gun Ranged stab + ice attack to 1 enemy. Fires a special bullet imbued with ice. Body part used: Arms Stat(s) used: AGI Prerequisite skill(s): Gun Mastery, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	5				8					13
Damage	130%	135%	140%	145%	185%	190%	195%	200%	205%	255%
Hit Rate Modifier	-2
Activation Speed	70%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	13				16					20
Damage	258%	261%	264%	267%	285%	288%	292%	295%	299%	325%
Hit Rate Modifier	-2
Activation Speed	70%

Charged Ice チャージアイス
Attack Skill: Gun Line-piercing ranged stab + ice attack. DEF lowered until activation. Takes time to carefully aim a special bullet imbued with ice. Body part used: Arms Stat(s) used: AGI Prerequisite skill(s): Ice Rounds, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	15				20					25
Damage	185%	191%	197%	203%	240%	246%	252%	258%	264%	310%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	25				27					30
Damage	313%	316%	319%	322%	340%	343%	347%	350%	354%	380%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%

Volt Rounds サンダーショット
Attack Skill: Gun Ranged stab + volt attack to 1 enemy. Fires a special bullet imbued with electricity. Body part used: Arms Stat(s) used: AGI Prerequisite skill(s): Gun Mastery, lv. 3
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	5				8					13
Damage	130%	135%	140%	145%	185%	190%	195%	200%	205%	255%
Hit Rate Modifier	-2
Activation Speed	70%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	13				16					20
Damage	258%	261%	264%	267%	285%	288%	292%	295%	299%	325%
Hit Rate Modifier	-2
Activation Speed	70%

Charged Volt チャージサンダー
Attack Skill: Gun Line-piercing ranged stab + volt attack. DEF lowered until activation. Takes time to carefully aim a special bullet imbued with electricity. Body part used: Arms Stat(s) used: AGI Prerequisite skill(s): Volt Rounds, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	15				20					25
Damage	185%	191%	197%	203%	240%	246%	252%	258%	264%	310%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	25				27					30
Damage	313%	316%	319%	322%	340%	343%	347%	350%	354%	380%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%

Burst Shot バーストショット
Attack Skill: Gun Line-piercing ranged stab + fire + ice + volt shot. DEF lowered until activation. Takes time to carefully aim a special bullet. Once used, skill will be unusable for 3 turns. After use, cannot be used again for 3 turns. Body part used: Arms Stat(s) used: AGI Prerequisite skill(s): Charged Fire, lv. 2 Charged Ice, lv. 2 Charged Volt, lv. 2
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	15				20					25
Damage	225%	232%	239%	246%	290%	297%	304%	311%	318%	375%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	25				27					30
Damage	378%	382%	385%	389%	420%	424%	428%	432%	436%	485%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%

Head Snipe ヘッドスナイプ
Attack Skill: Gun Accurate ranged stab attack to 1 enemy. May bind the enemy's head. Snipes at the enemy's head. Body part used: Arms Stat(s) used: AGI, LUC Prerequisite skill(s): Gun Mastery, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	6				10					16
Damage	140%	145%	150%	155%	170%	175%	180%	185%	190%	215%
Head Bind Chance	35%				45%					55%
Hit Rate Modifier	+35
Activation Speed	70%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	16				18					21
Damage	218%	220%	223%	225%	238%	242%	246%	250%	254%	270%
Head Bind Chance	55%				65%					75%
Hit Rate Modifier	+35
Activation Speed	70%

Arm Snipe アームスナイプ
Attack Skill: Gun Accurate ranged stab attack to 1 enemy. May bind the enemy's arms. Snipes at the enemy's arms. Body part used: Arms Stat(s) used: AGI, LUC Prerequisite skill(s): Gun Mastery, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	6				10					16
Damage	140%	145%	150%	155%	170%	175%	180%	185%	190%	215%
Arm Bind Chance	35%				45%					55%
Hit Rate Modifier	+35
Activation Speed	70%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	16				18					21
Damage	218%	220%	223%	225%	238%	242%	246%	250%	254%	270%
Arm Bind Chance	55%				65%					75%
Hit Rate Modifier	+35
Activation Speed	70%

Leg Snipe レッグスナイプ
Attack Skill: Gun Accurate ranged stab attack to 1 enemy. May bind the enemy's legs. Snipes at the enemy's legs. Body part used: Arms Stat(s) used: AGI, LUC Prerequisite skill(s): Gun Mastery, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	6				10					16
Damage	140%	145%	150%	155%	170%	175%	180%	185%	190%	215%
Leg Bind Infliction Rate	35%				45%					55%
Hit Rate Modifier	+35
Activation Speed	70%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	16				18					21
Damage	218%	220%	223%	225%	238%	242%	246%	250%	254%	270%
Leg Bind Infliction Rate	55%				65%					75%
Hit Rate Modifier	+35
Activation Speed	70%

Charged Shot チャージショット
Attack Skill: Gun Line-piercing ranged stab attack. DEF lowered until activation. Takes time to carefully aim a special, powerful bullet. Body part used: Arms Stat(s) used: AGI Prerequisite skill(s): Gun Mastery, lv. 7
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	15				20					25
Damage	220%	227%	234%	241%	285%	292%	299%	306%	313%	375%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	25				27					30
Damage	378%	382%	385%	389%	410%	413%	417%	420%	424%	450%
DEF Decrease	50%
Hit Rate Modifier	-5
Activation Speed	30%

Ricochet 跳弾
Attack Skill: Gun 2-3 ranged stab attacks to all enemies randomly. Hits enemies multiple times with ricocheting shots. Improve to increase the number of attacks. Multiple ranged stab attacks to all enemies randomly. Can hit the same target more than once. Body part used: Arms Stat(s) used: AGI Prerequisite skill(s): Gun Mastery, lv. 10
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	20				25					30
Damage Per Hit	105%	106%	107%	108%		109%	110%	111%	112%
Minimum Attacks	2				3
Maximum Attacks	3				4					5
Hit Rate Modifier	-15
Activation Speed	80%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	30									35
Damage Per Hit	113%	114%	115%	116%	117%	118%	119%	120%	121%
Minimum Attacks	3									4
Maximum Attacks	5
Hit Rate Modifier	-15
Activation Speed	80%

HP Up branch

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%

Cover Fire 後方支援
Healing Skill When the user guards on the back line, allies on the front line recover HP. Total HP recovered is equal to the skill's base HP recovery, plus a percentage of the target's max HP. Prerequisite skill(s): HP Up, lv. 1
Level	1	2	3	4	5	6	7	8	9	10
HP Recovery (Base Value)	10	14	18	22	25	28	31	34	37	40
HP Recovery (% Of Max HP)	1%	3%	4%	6%	7%	9%	10%	12%	13%	15%
Level	11	12	13	14	15	16	17	18	19	20
HP Recovery (Base Value)	44	49	55	62	70	79	89	100	112	145
HP Recovery (% Of Max HP)	15%

Shell Shock 後方撹乱
Support Skill Lowers ATK, DEF, hit rate, and evade rate of rear enemy line. May stun. Shoots a barrage at the enemy's rear line to cause panic. Body part used: Arms Stat(s) used: LUC Prerequisite skill(s): HP Up, lv. 10
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	12				16					20
Stun Chance	90%				130%					170%
ATK Decrease	10%	12%	14%	16%	20%	22%	23%	25%	26%	30%
DEF Decrease	10%	12%	14%	16%	20%	22%	24%	26%	28%	30%
Accuracy Decrease	50	60	70	80	100	110	120	130	140	160
Evasion Decrease	50	60	70	80	100	110	120	130	140	160
Activation Speed	200%

Preemptive Shell 先制撹乱
Support Skill May use Shell Shock at the start of battle. Must know Shell Shock. Will not activate if already used by another party member that turn. The user must also know Shell Shock. Will not activate if another party member uses it first. Prerequisite skill(s): Shell Shock, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
Activation Chance	15%	20%	25%	30%	35%	42%	49%	56%	63%	70%

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%

Penetrator ペネトレイター
Support Skill All single-target attacks become line-piercing. Raises pierce damage. Damage to back line enemies is reduced for single-target attacks. If the skill already had a line-piercing effect, or was already targeting an enemy in the back line, damage dealt to back line enemies is increased. Prerequisite skill(s): Phys ATK Up, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
Pierce Damage	40%	43%	46%	50%	54%	58%	62%	66%	70%	75%
Damage (Line-piercing Skill)	120%	123%	126%	129%	132%	136%	139%	143%	146%	150%
Level	11	12	13	14	15	16	17	18	19	20
Pierce Damage	77%	79%	81%	83%	85%	87%	89%	91%	93%	100%
Damage (Line-piercing Skill)	152%	153%	155%	156%	158%	159%	161%	162%	164%	170%

Point Blank 零距離射撃
Support Skill: Charge Next turn, shortens distance of ranged attacks but raises damage & hit rate. Aims for a powerful shot at close range. Will be canceled by other charge skills. Ranged attacks become melee instead; has no effect on melee attacks. The effects will be overwritten if the user uses another Charge skill. Body part used: Head Prerequisite skill(s): Phys ATK Up, lv. 10
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	2				4					6
ATK Increase	65%				75%					85%
Accuracy Increase	150	185	221	258	296	335	375	416	458	500
Activation Speed	80%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	6									10
ATK Increase	85%				90%					100%
Accuracy Increase	520	540	560	580	600	620	640	660	680	700
Activation Speed	80%

TP Up branch

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%

Act Quick クイックアクト
Support Skill: Charge Next turn, lowers TP cost and raises turn speed. Prepares oneself for the next attack. Will be canceled by other charge skills. The effects will be overwritten if the user uses another Charge skill. Body part used: Arms Prerequisite skill(s): TP Up, lv. 5
Level	1	2	3	4	5	6	7	8	9	10
TP Cost	1				2					3
Action Speed Increase	50%	60%	70%	80%	95%	105%	115%	125%	135%	150%
TP Cost Decrease	20%				40%					60%
Activation Speed	80%
Level	11	12	13	14	15	16	17	18	19	20
TP Cost	3									4
Action Speed Increase	155%	160%	165%	170%	175%	180%	185%	190%	195%	230%
TP Cost Decrease	60%									80%
Activation Speed	80%

Double Action ダブルアクション
Support Skill May use attack skills a second time. The second use does not cost TP. Does not activate during Action Boost. Prerequisite skill(s): TP Up, lv. 10
Level	1	2	3	4	5	6	7	8	9	10
Activation Chance	3%	4%	5%	6%	7%	8%	9%	10%	11%	12%
Level	11	12	13	14	15	16	17	18	19	20
Activation Chance	13%	14%	15%	16%	17%	18%	19%	20%	21%	22%

Standalone skills

Take 採取
Field Skill: Gathering Allows the user to find more resources at certain taking 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
Take 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
Take Yield Increase	20%
Activation Rate	20%

References

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