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★ Beginner's Guide and Advanced Tips and Tricks
★ The First Descendant Roadmap
★ Season 1 | New Update
★ New Characters: Hailey and Ultimate Freyna
☆ Season Guides: Battle Pass | Invasion Guide | ETA-0
☆ New Void Interception: Death Stalker
☆ New Weapon: Frost Watcher
An Iron Will is a Descendant module in The First Descendant. Read on to learn how to get An Iron Will, its effects, and more!
| Agna Desert (Hard) - Caligo Ossuary Mission Monster |
| Agna Desert (Hard) - The Asylum Mission Monster |
| Agna Desert (Hard) - Vermillion Waste: Vulgus Strategic Outpost Complete |
| Agna Desert (Normal) - Abandoned Reconstruction Site Mission Monster |
| Agna Desert (Normal) - Baggage Transport Base Mission Monster |
| Agna Desert (Normal) - Caligo Ossuary Mission Monster |
| Agna Desert (Normal) - Commanding Ground Mission Monster |
| Agna Desert (Normal) - Excavation Team Directional Radar Mission Monster |
| Agna Desert (Normal) - Heavy Equipment Entry Path Mission Monster |
| Agna Desert (Normal) - Kuiper Depot Mission Monster |
| Agna Desert (Normal) - Miragestone: Vulgus Strategic Outpost Mission Monster |
| Agna Desert (Normal) - Ossuary Mission Monster |
| Agna Desert (Normal) - Outpost Workshop Mission Monster |
| Agna Desert (Normal) - Previous Construct Team Quarters Mission Monster |
| Agna Desert (Normal) - Red Sphere Mission Monster |
| Agna Desert (Normal) - Rock Cave Base Mission Monster |
| Agna Desert (Normal) - Storage: Vulgus Strategic Outpost Mission Monster |
| Agna Desert (Normal) - Surveillance Location Mission Monster |
| Agna Desert (Normal) - Vermillion Waste: Vulgus Strategic Outpost Complete |
| Agna Desert (Normal) - Vermillion Waste: Vulgus Strategic Outpost Mission Monster |
| Agna Desert (Normal) - Void Fusion Reactor - Agna Desert Miragestone Deposit Mission Monster |
| Agna Desert (Normal) - Void Fusion Reactor - Agna Desert The Storage Mission Monster |
| Agna Desert (Normal) - Void Fusion Reactor - Agna Desert Vermillion Waste Mission monster |
| Echo Swamp (Hard) - Abandoned Refinery Unit Complete |
| Echo Swamp (Hard) - Seed Vault Mission Monster |
| Echo Swamp (Hard) - The Chapel Mission Monster |
| Echo Swamp (Normal) - Abandoned Zone Mission Monster |
| Echo Swamp (Normal) - Arche Motion Sensor Mission Monster |
| Echo Swamp (Normal) - Derelict Covert: Vulgus Strategic Outpost Mission Monster |
| Echo Swamp (Normal) - Environment Contamination Zone Complete |
| Echo Swamp (Normal) - Environment Contamination Zone Mission Monster |
| Echo Swamp (Normal) - Field Energy Station Mission Monster |
| Echo Swamp (Normal) - Ghost Marsh Mission Monster |
| Echo Swamp (Normal) - Hazy Swamp Mission Monster |
| Echo Swamp (Normal) - Kuiper Transport Route Mission Monster |
| Echo Swamp (Normal) - Muskeg Swamp: Vulgus Strategic Outpost Mission Monster |
| Echo Swamp (Normal) - Seed Vault Mission Monster |
| Echo Swamp (Normal) - The Chapel Mission Monster |
| Echo Swamp (Normal) - The Tree of Truth Mission Monster |
| Echo Swamp (Normal) - Traces of Colossi Interceptions Mission Monster |
| Echo Swamp (Normal) - Verdant Greenery Mission Monster |
| Echo Swamp (Normal) - Void Fusion Reactor - Echo Swamp Derelict Covert Mission Monster |
| Echo Swamp (Normal) - Void Fusion Reactor - Echo Swamp Muskeg Swamp Mission Monster |
| Intercept Battle: (Hard) Molten Fortress |
| Legend |
|---|
|
・Mission Monster - Any of the enemies encountered in the mission can drop the module. ・Complete - The module can be received after completing the mission. ・Amorphous Material Pattern: XXX Required - Choose the Amorphous Material Pattern after defeating the Colossi in an Intercept Battle. ・Descendant Required - Open the Encrypted Vault using the required descendant. ・Intercept Battle - Defeat the indicated Void Intercept Boss. |
| An Iron Will Basic Info | |||
|---|---|---|---|
 An Iron Will
|
Capacity | 6 | |
| Socket | Rutile | ||
| Class |  Descendant |
||
| Effects | |||
| When Shield is at X%, DEF +X%. | |||
| Lvl | Effect | Capacity | Kuiper Shard | Gold |
|---|---|---|---|---|
| 0 | When Shield is at 0%, DEF +32%. | 6 | - | - |
| 1 | When Shield is at 0%, DEF +36.5%. | 7 | 900 | 9000 |
| 2 | When Shield is at 0%, DEF +41.5%. | 8 | 2700 | 27000 |
| 3 | When Shield is at 0%, DEF +47.9%. | 9 | 6000 | 60000 |
| 4 | When Shield is at 0%, DEF +55.5%. | 10 | 12000 | 120000 |
| 5 | When Shield is at 0%, DEF +64%. | 11 | 22000 | 220000 |
| 6 | When Shield is at 0%, DEF +74.3%. | 12 | 39300 | 393000 |
| 7 | When Shield is at 0%, DEF +85.1%. | 13 | 67800 | 678000 |
| 8 | When Shield is at 0%, DEF +97.3%. | 14 | 114300 | 1143000 |
| 9 | When Shield is at 0%, DEF +111.6%. | 15 | 189300 | 1893000 |
| 10 | When Shield is at 0%, DEF +128.3%. | 16 | 309300 | 3093000 |
| Descendant Modules | Weapon Modules |
An Iron Will Module
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