What does Opero 77's weapon skill do?

Assault: Armament Prep: ATK +12–33.6.

What does it cost to promote Opero 77 to level 90?

125,700 T-Creds plus 8× Igneosite, 16× Metadiastima Photoemission Tube, 5× Auronyx, 50× Heavy Cast Die and more. The promotion table lists every step.

All weapons

Opero 77

Weapon stats · Arknights: Endfield

Polearm

ATK · Lv 90

283

ATK · Lv 1

Key facts

Opero 77 is a 3-star Polearm in Arknights: Endfield. 283 ATK at level 90, from 29 at level 1. Weapon skills and Potentials are below.

Rarity: 3★
Weapon type: Polearm
Base ATK at level 90: 283
Base ATK at level 1: 29
Main Attribute: Main attribute +10–79
Assault: ATK +12–33.6.

Base ATK

Levels 1, 20, 40, 60, 80 and 90 · the six stated points

A weapon hands its wielder one number. Everything else it adds comes from its skills, and from the potential the copies you own have reached.

Lv 1

Lv 20

Lv 40

140

Lv 60

197

Lv 80

254

Lv 90

283

Weapon skills

2 skills

What the weapon adds beyond its ATK. Numbers are the game’s own.

Main Attribute [S]
Main Attribute
Main attribute +10–79
Assault: Armament Prep
Assault
ATK +12–33.6.

Potentials

The wiki carries no per-potential text for Opero 77. Its skill numbers still rise with each duplicate copy; what they rise to is not published, so nothing is printed here.

Promotion

Level 1 → 90 in 4 steps

Materials and T-Creds for each promotion step, then the total.

Lv 40
Kalkonyx ×3
Cast Die ×5
2,200T-Creds
Lv 60
Auronyx ×5
Cast Die ×18
8,500T-Creds
Lv 80
Heavy Cast Die ×20
Umbronyx ×5
25,000T-Creds
Lv 90
Igneosite ×8
Metadiastima Photoemission Tube ×16
Heavy Cast Die ×30
90,000T-Creds

Total to level 90

125,700 T-Creds

Igneosite

Metadiastima Photoemission Tube

Auronyx

Heavy Cast Die

Kalkonyx

Umbronyx

Cast Die

Description

One of the standard-issue operator weapons manufactured by Endfield Industries. This weapon is personally designed by senior Endfield Arsenal Engineer Opero. It can be wielded effectively by even newly minted Endfield operators, thanks to its ergonomic designs.

Opero 77 FAQ

What is Opero 77's base ATK at level 90?: 283 ATK at level 90, from 29 at level 1.
What does Opero 77's weapon skill do?: Assault: Armament Prep: ATK +12–33.6.
What does it cost to promote Opero 77 to level 90?: 125,700 T-Creds plus 8× Igneosite, 16× Metadiastima Photoemission Tube, 5× Auronyx, 50× Heavy Cast Die and more. The promotion table lists every step.

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