October 8, 2026 · 4 min read
UR Heavy Tactical: Field Support cuts front-row Physical damage. Raise him as the wall for Lucian or Yana, not as a carry.
Skill 1
Auto AttackCD: 1.7sLv.1 required
0★: Attacks enemies with a shotgun, dealing damage equal to 136% ATK.
5★: Attacks enemies with a shotgun, dealing damage equal to 503.2% ATK.
He is not empty while Field Support is down. The 1.7s shotgun is the filler, not the reason to own him.
| 1★ | Deals 35% more damage. |
|---|---|
| 2★ | Bonus damage is increased to 75%. |
| 3★ | Bonus damage is increased to 130%. |
| 4★ | Bonus damage is increased to 190%. |
| 5★ | Bonus damage is increased to 265%. |
Skill 2
Active SkillCD: 10.2sLv.5 required
0★: Provides cover with a shield, reducing front-row allies’ incoming Physical DMG by 24.75%. Duration is not listed at 0★; 1★ sets it to 6s.
5★: Provides cover with a shield, reducing front-row allies’ incoming Physical DMG by 30% for 8s.
This is the skill. Until 4★ it is front-row only. It does not raise attack and it does not hit enemies.
| 1★ | Increases duration to 6 second(s). |
|---|---|
| 2★ | Reduces Physical DMG taken by 5%. |
| 3★ | Increases duration to 7 second(s). |
| 4★ | Affects all allies. |
| 5★ | Increases duration to 8 second(s). |
Skill 3
Passive SkillLv.21 required
0★: In combat, reduces front-row allies’ incoming damage by 7.2%.
5★: In combat, reduces front-row allies’ incoming damage by 17.7%.
Always-on front-row cut. It does not care about Physical vs other types. Back-row seats do not get it.
| 1★ | Reduces damage taken by 2%. |
|---|---|
| 2★ | Increases bonus effect to 4%. |
| 3★ | Increases bonus effect to 6%. |
| 4★ | Increases bonus effect to 8%. |
| 5★ | Increases bonus effect to 10%. |
Skill 4
Ace SkillLv.31 required
0★: Increases ATK, DEF, and HP by 20%. Increases Skill Cooldown Speed by 20%.
5★: Increases ATK, DEF, and HP by 20%. Increases Skill Cooldown Speed by 20%.
Personal ceiling. Unlocks at level 31 and 4★. The printed line does not change from 0★ to 5★.
Arnold is the UR Heavy Tactical who covers the front instead of carrying it. Tactical Shotgun is a 1.7s auto. Field Support cuts front-row Physical damage; at 4★ it hits all allies. Tactical Shield is a permanent front-row damage cut. Doomsday Judgment unlocks at level 31 and 4★.
At Lv.150 / 5★ he has 933,798 HP and 13,880 attack. That HP is third among 16 URs. The attack is 14th, next to Dirk and Bekka. Summon: 10 fragments.
Pick him when the front is eating Physical hits and you need HP, not burst. Field Support plus Tactical Shield exist for Lucian, Monroe, or another front seat that actually attacks. Dirk is the other UR Heavy Tactical if you need a second Heavy wall.
Skip him as a damage UR. 13,880 attack will not win a check against Lucian (26,726) or Yana (25,850). If you already raised Bekka (992,082 HP) as the Light wall, Arnold is the Heavy HP job, not a second carry.
Field Support and Tactical Shield name the front row. Put damage in those seats (Lucian, Monroe) or sit Arnold on the front with them. At 4★ Field Support hits all allies; until then a back-row sniper does not receive the Physical cut.
Skill books are the sum of the per-level costs in the game data. Use the hero calculator for EXP and fragments.
| Skill | Books to Lv.30 | Books to Lv.40 |
|---|---|---|
| Tactical Shotgun | 226,000 | 576,000 |
| Field Support | 226,000 | 576,000 |
| Tactical Shield | 226,000 | 576,000 |
| Doomsday Judgment | 226,000 | 576,000 |
Field Support first: the Physical shield is the kit. Tactical Shield second: always-on front cut. Doomsday Judgment third, at level 31 and 4★: 20% stats and cooldown speed. Tactical Shotgun last.
Expert breakdown
Upgrade in this order
Verdict
Raise Arnold when the march needs a Heavy Tactical wall, not a second Lucian. Star Field Support, take Doomsday Judgment at level 31 and 4★, and point the shield at a front that deals damage. Do not gear him as a carry. If Dirk already holds the Heavy Tactical seat, pick one wall, not both at 5★, unless the front still dies.
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