★ Tier Lists: Characters | Weapons | Geniemons
★ Builds: Fina | Lynn | Psyche | Lady Nifle | Rebecca
★ Versions: Rainbow-Coloured Dream | Version 1.1
★ How to Get Characters | Mystic Maze | Redeem Codes
★ All Character Weapons | Siren's Kiss | Pyrothirst
★ On a Gentle Breeze | Dead or Alive | Judgment Day

Excavation ∞ and Covert Excavation ∞ Commissions are challengeable dungeons where you can get Coins and Secret Letter Drops respectively, at Duet Night Abyss. See below for a list of all Excavation ∞ and Covert Excavation ∞ Commissions, their schedules, their rewards, as well as the enemies you can find in each of them.
List of Contents
| Excavation ∞ Objective | |
|---|---|
| Assist Lunoxplorer with her terrain excavation and safeguard the Excavators | |
| Commission Type | Commission |
| Rewards | Coins |
| How to Unlock | Complete The Art of Survival main quest |
| Excavation ∞ Quote Description |
|---|
| “The weather is so nice, let's go for a walk... Oh wait, no! We can go explore outdoors together! And we can conduct research at the same time! Remember to take good care of these exploration devices. They might not be very user-friendly, but they are very expensive... After we finish exploring the terrain, I'll add your name to my research report!” — Lunoxplorer |
| Excavation ∞ Schedule |
|---|
| Open permanently in Commissions. |
| Commission and Level | Unique Rewards | How to Unlock |
|---|---|---|
| Excavation ∞ I Lv. 10 |
・ Coin x6300 |
Complete The Art of Survival main quest |
| Excavation ∞ II Lv. 20 |
・ Coin x9900 |
Complete the previous difficulty to unlock. |
| Excavation ∞ III Lv. 30 |
・ Coin x13500 |
Reach Trial Lv. 25 |
| Excavation ∞ IV Lv. 40 |
・ Coin x17100 |
Reach Trial Lv. 35 |
| Excavation ∞ V Lv. 50 |
・ Coin x20700 |
Reach Trial Lv. 45 |
| Excavation ∞ VI Lv. 60 |
・ Coin x24300 |
Reach Trial Lv. 55 |
| Excavation ∞ VII Lv. 70 |
・ Coin x27000 |
Reach Trial Lv. 60 |
| Commission and Level | Enemies |
|---|---|
| Excavation ∞ I Lv. 10 | |
| Excavation ∞ II Lv. 20 | |
| Excavation ∞ III Lv. 30 | |
| Excavation ∞ IV Lv. 40 | |
| Excavation ∞ V Lv. 50 | |
| Excavation ∞ VI Lv. 60 | |
| Excavation ∞ VII Lv. 70 |
| Covert Excavation ∞ Objective | |
|---|---|
| Assist Lunoxplorer with her terrain excavation and safeguard the Excavators | |
| Commission Type | Covert Commission |
| Rewards | Secret Letter Drops |
| How to Unlock | Complete the quest Go, Geniemons! |
| Excavation ∞ Quote Description |
|---|
| “The weather is so nice, let's go for a walk... Oh wait, no! We can go explore outdoors together! And we can conduct research at the same time! Remember to take good care of these exploration devices. They might not be very user-friendly, but they are very expensive... After we finish exploring the terrain, I'll add your name to my research report!” — Lunoxplorer |
| Covert Excavation ∞ Schedule |
|---|
| In hourly refresh pool in Covert Commissions |
| Commission and Level | Unique Rewards | How to Unlock |
|---|---|---|
| Excavation ∞ Lv. 40 | Complete the quest Go, Geniemons! |
Covert Commissions let you customize what kind of rewards you can get with the use of purchasable Secret Letters. Simply go to the Shop menu and buy Secret Letters of the character, weapon, or Demon Wedge that you want to obtain, and then select it before beginning the Covert Commission.
By the end of the commission, you can choose only one from three out of the six potential rewards. Do keep in mind that higher rarity drops are less likely to appear as selectable rewards, so be sure to plan out how many Secret Letters to purchase.
| Commission and Level | Enemies |
|---|---|
| Excavation ∞ Lv. 40 |
| Excavation ∞ Objectives |
|---|
|
|

Follow the in-game marker to find the site for the device called Excavator. Upon reaching the location, an Excavator will activate. There are a total of three Excavators you must activate to finish the commission.

Excavators require cube-like items called Excavator Modules to fully finish. These are acquired by defeating Porter Filthoids, which are flying enemies that have large orange glowing lower bodies. Porter Filthoids will spawn along with other enemies to attack you while you defend the Excavator.

After collecting an Excavator Module, approach an Excavator for automatically install it. An Excavator will need four modules to fully excavate to 100%, which is the max amount of modules you can carry.

Keep an eye on the excavation progress and the remaining number of Excavator Modules. Keep the Excavators from reaching 0 HP or it will be disabled for the rest of the commission. Bring other teammates with you so you can cover more ground.

Excavators will reward Coins while it is excavating. The commission is completed after three Excavators have been activated and at least one of them fully excavates. Having all three Excavators fully excavate will give more coins than the commission's base reward.

Completing an Excavation commission allows for a choice between retreating or continuing to activate new Excavators for more Coins. Each wave will increase the rewards until it is reset on the 6th Wave. Enemy levels will steadily increase per wave.

| All Commissions | |
|---|---|
Exploration |
Relocation |
Defence |
Escort |
Expulsion |
Mediation |
Hedge |
Excavation |
Termination |
Capture |
Dismantle |
Chase |
All Excavation ∞ Commissions

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