Backpack guide

Updated: 8 October 2026

Backpacks v3.5: passives and upgrade chains by Armed Conquest section (AC 6–19), the weapon-switch backpack and AC rewards.

The tables show which Amplifier or Jammer to use for each Rank 2 backpack (as of CN version 3.2).
Only these combinations lead to the later Rainbow backpacks.
If you have many backpacks of one type, you can make your own combination (for example, Powerbank + Armor Jammer), but such a combination has no Rainbow version.
“How many to craft (Michu)” is how many Michu recommends and plans to craft; craft more if you can afford it.

Jammer/Amplifier backpacks: passives and upgrade chain (AC 6–7)

Upgrade chain: Jammer/Amplifier → Rank 2 Backpack → Rainbow; each cell shows the backpack’s effect type.

All passives	AC	Jammer/Amplifier	Rank 2 Backpack	Rainbow	How many to craft (Michu)
Activate the Aura: when allies within 1 adjacent tile are hit by a Tactical attack, DMG Taken −25%. Similar effects cannot stack. When allies within 1 adjacent tile are hit by a Missile attack, the first missile becomes unable to hit. This effect can only be activated 1 time per sortie. When retaliating: DMG +15% and Crit Rate +10%. ST Body HP +10%, DMG +5%	AC 6	Retaliation	Retaliation	Retaliation	0
No ST type restriction. ST movement +1. In combat, Enemy Armor −50%. ST Body HP +10%, DMG +5%	AC 6	Armor	Armor	Armor	1-2
At the end of the action, if there are no enemies within 2 adjacent tiles, gains Stealth for 2 turns. This effect has a 3-turn trigger interval. At the start of the action, if Stealth is active, restores 1 AP. In combat, Enemy DMG Taken +10%. ST Body HP +10%, DMG +5%	AC 7	DMG UP	DMG UP	DMG UP	0

Backpacks (AC 7–10): Shawnee’s unique weapon and other passives

All passives	AC	Jammer/Amplifier	Rank 2 Backpack	Rainbow	How many to craft (Michu)
(1) Unique weapon of Shawnee. (2) On the first active attack each turn: DMG +7.5% and Crit Rate +5%, ST Body HP +10%, DMG +5%. (3) When attacking with a Rail Gun, DMG rises by 6% for every 1 ammo in the magazine, up to 30%. (4) When actively attacking with a Rail Gun, if a part is destroyed, 1 ammo is reloaded after combat. This effect has a 1-turn trigger interval. 4 passives	AC 7	First Strike → First Strike → Adjudicator			0
ST movement type changes to Levitating: the ST can pass over low obstacles. Before initiating combat with an active attack, if the target is in the movement path, the retaliation is guaranteed to miss. Up to 1 time per turn. On the first combat initiated each turn: DMG +7.5% and Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 9	First Strike	First Strike	First Strike	0
At the start of the action, repairs itself and allies within 1 ring, once: restores HP equal to 0.6x the Manipulator’s Repair AMT. Does not repair destroyed parts. In combat, Enemy DMG −10%.	AC 9	Attack	Attack	Attack	0
Can use the Weapon Switch code up to 1 time per turn. After the action, if both arms are intact, can use the Weapon Switch code 1 more time every 2 turns. In combat, Enemy DMG Taken +10%. The ST gains an extra 300 Power. ST Body HP +10%, DMG +5%	AC 10	DMG UP	DMG UP	DMG UP	3-5

Backpacks (AC 10–12): passives and chains

All passives	AC	Jammer/Amplifier	Rank 2 Backpack	Rainbow
The 2-tile area around the ST becomes a valid attack zone for allied Missile Launcher and Rocket Launcher attacks. Hit Rate +25% for attacks triggered by backpack effects. On the first combat initiated each turn: DMG +7.5% and Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 10	First Strike	First Strike	First Strike
Tactical Weapon ammo capacity +2. After Re-ATK triggers: Hit Rate +10%, Crit Rate +5%. Can use the Quick Reload command; it shares a cooldown with other ammo-reload skills. ST Body HP +10%, DMG +5%	AC 11	Re-ATK	Re-ATK	Re-ATK
No ST type restriction. When attacking with a Tactical Weapon: DMG Taken −25% and gains 1 Charge stack. Similar effects cannot stack. If you are the target, gain 1 extra stack. At 6 Charge stacks, repairs 15% HP of all parts and restores 1 AP after combat. In combat, Enemy DMG −10%. ST Body HP +10%	AC 11	Attack	Attack	Attack
On deployment gains Stealth for 2 turns. At the end of the action, if there are no enemies within 1 adjacent tile, gains Stealth for 2 turns. This effect has a 3-turn trigger interval. On the first combat initiated each turn: DMG +7.5% and Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 12	First Strike	First Strike	First Strike

Backpacks (AC 12–14): passives, Fia’s unique weapon

All passives	AC	Jammer/Amplifier	Rank 2 Backpack	Rainbow	How many to craft (Michu)
Moving 4 or more tiles before an active attack grants movement +1 for 1 turn. ST movement +1. After Re-ATK triggers: Hit Rate +10%, Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 12	Re-ATK	Re-ATK	Re-ATK	1-2
ST movement +1. ST movement type changes to Levitating: the ST can pass over low obstacles. In combat, Enemy DMG Taken +10%. ST Body HP +10%, DMG +5%	AC 13	DMG UP	DMG UP	DMG UP	2-3
(1) Unique weapon of Fia. (2) On the first active attack each turn: DMG +7.5% and Crit Rate +5%, ST Body HP +10%, DMG +5%. (3) When attacking debuffed targets with a Rail Gun: DMG +20%. (4) When attacking with a Rail Gun, if 3 or more targets are hit, 1 ammo is reloaded after combat. This effect has a 1-turn trigger interval. 4 passives	AC 13	First Strike → First Strike → Sugarcoated Destroyer			0-1
No ST type restriction. ST movement +1. On the first active attack each turn: DMG +7.5% and Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 14	First Strike	First Strike	First Strike	0-1

Backpacks (AC 14–15): passives

All passives	AC	Jammer/Amplifier	Rank 2 Backpack	Rainbow	How many to craft (Michu)
Vision +1 on stages with Fog. Can use the Detection code: removes Stealth from all enemies within 4 tiles. After use, can Re-ATK from the same spot. The 2-tile area around the ST becomes a valid attack zone for allied Missile and Rocket attacks. In combat, Enemy DMG Taken +10%. ST Body HP +10%, DMG +5%	AC 14	DMG UP	DMG UP	DMG UP	0
At the start of the action randomly reloads 1 round into a non-depleted Tactical Weapon magazine. Tactical Weapon ammo capacity +2. On the first active attack each turn: DMG +7.5% and Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 15	First Strike	First Strike	First Strike	1-2
At the start of the action performs Passive Repair on 3 random allies within 3 adjacent tiles. Repair AMT equals 0.4x the Manipulator’s Repair AMT. Does not repair destroyed parts. In combat, Enemy Crit Rate −10%.	AC 15	Crit	Crit	Crit	1

Backpacks (AC 16–17): passives

All passives	AC	Jammer/Amplifier	Rank 2 Backpack	Rainbow	How many to craft (Michu)
After an active Tactical Weapons attack, applies a debuff to the attacker: [After a Tactical Weapon is used, all Tactical Weapons go on cooldown, and fixed DMG equal to 5% of max HP is dealt]. When attacking with a Tactical Weapon: DMG Taken −25%. In combat, Enemy Crit DMG −10%. ST Body HP +10%	AC 16	Crit DMG	Crit DMG	Crit DMG	0-1
When actively attacking while in Stealth: Crit Rate +50% for that attack. The effect triggers only once. At the end of the action, if there are no enemies within 2 adjacent tiles, gains Stealth for 2 turns. This effect has a 3-turn trigger interval. On the first active attack each turn: DMG +7.5% and Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 16	First Strike	First Strike	First Strike	0-1
At the end of the action, if there are no enemies within 2 adjacent tiles, gains Stealth for 2 turns. This effect has a 3-turn trigger interval. Gains the Concealment code: gives you and a chosen ally within 4 tiles Stealth for 2 turns. You can keep acting with the remaining movement. After Re-ATK triggers: Hit Rate +10%, Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 17	Re-ATK	Re-ATK	Re-ATK	0-1
When attacking with a Tactical Weapon: DMG Taken −25%. DMG Taken from Code Skills −15% for friendly units within guard range; the effect does not stack. After taking Code Skill DMG, restores 15% HP of the Body part; triggers once per turn. In combat, Enemy DMG −10%. ST Body HP +10%	AC 17	Attack	Attack	Attack	0-1

Backpacks (AC 18–19): passives, Rosa J’s unique weapon

All passives	AC	Jammer/Amplifier	Rank 2 Backpack	Rainbow	How many to craft (Michu)
Can use the Optical Mark code: the next attack applies a debuff: cannot enter Stealth, Dodge −15% for 1 turn; and can Re-ATK from the same spot. The 2-tile area around the ST becomes a valid attack zone for allied Missile and Rocket attacks. After Re-ATK triggers: Hit Rate +10%, Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 18	Re-ATK	Re-ATK	Re-ATK	0-1
When initiating combat, if the target is in the movement path and a part is destroyed, applies Unable to move to the target for 1 turn; triggers once per turn. ST movement type changes to Levitating: the ST can pass over low obstacles. After Re-ATK triggers: Hit Rate +10%, Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 18	Re-ATK	Re-ATK	Re-ATK	0-1
After an active attack, if 2 or more ammo were used, gains 1 random buff for 2 turns. Tactical Weapon ammo capacity +2. On the first active attack each turn: DMG +7.5% and Crit Rate +5%. ST Body HP +10%, DMG +5%	AC 19	First Strike	First Strike	First Strike	0-1
(1) Unique weapon of Rosa: Judgement. (2) On the first active attack each turn: DMG +7.5% and Crit Rate +5%, ST Body HP +10%, DMG +5%. (3) When used by a pilot with Hyper-Aptamer aptitude: Cutter weapon range +1 and DMG +20%. (4) Cutter max ammo +1. When actively attacking 4 or more targets with a Cutter, restores 1 ammo charge after combat. Triggers only 1 time per 2 turns. 4 passives	AC 19	First Strike → First Strike → Heaven's Judgment			1

AC X backpack and version info

All passives	AC	Jammer/Amplifier	Rank 2 Backpack	Rainbow	How many to craft (Michu)
Melee attacks can hit flying targets. ST movement type changes to Levitating: the ST can pass over low obstacles. After Re-ATK triggers: Hit Rate +10%, Crit Rate +5%. ST Body HP +10%, DMG +5%	AC X	Re-ATK	Re-ATK	Re-ATK	1

Armed Conquest rewards by section: AC 1–19

Pilots’ unique weapons, backpack blueprints and dossiers for each section are on the Armed Conquest page, with AC 12–19 under “Upcoming sections”.

Weapon switch backpack: pilots and effects

Pilots	Effect
Rosa William Frida Fregata Matilda Erisa Toraoh	Y2 Sector 7 CP: before actively attacking without having moved, can trigger Re-ATK. Can only trigger 1 time per turn. Unable to move before attacking.
Gumusiay Dean	Wielding 2 own signature weapons (1st equipped with only buff accessories, 2nd equipped with damage accessories).
Natalia Sylvie Kelly Paloma Audrey Bertha	Wielding 2 own or different signature weapons (1st equipped with only buff accessories, 2nd equipped with damage accessories).
Asuka Shinji Hailis	Asuka: hybrid build (polearm + 2× MG) Shinji: hybrid build (HMG + sniper rifle) Hailis: switch weapons for many different Form Skills
Ophelia	Cooldown reset trick: swap to the 2nd Phantom Pain code skill.

Weapon switch backpack: cooldown reset tricks and special builds

Pilot	Effect
Paloma	Cooldown reset trick: swap to the 2nd Impromptu Expiriment active skill.
Adele	Cooldown reset trick: swap to the 2nd Flying Steps code skill.
Ophelia	Unique build (optional): swap to Natalia’s sniper rifle or Dean’s chainsaw.
Adele	Preventing enhanced tile overwrite: swap to 2× MG.