| Category | Achievement |
| Sub Achievement | Challenger: Series IV |
| Reward | 5 Primogems |
Requirement
Defeat the Perpetual Mechanical Array in its weakened state.
The Battle of Narukami Island
| Category | Achievement |
| Sub Achievement | Challenger: Series IV |
| Reward | 5 Primogems |
Defeat the Perpetual Mechanical Array in its weakened state.
