Weakness Verified when affinity matches walkthrough + boss guide (+ How to Play). HP/stagger numbers are not dual-sourced here — omitted or marked attributed in how-tos.
| Boss | Ch | Weak to | Notes | How-to | Status |
|---|---|---|---|---|---|
| Belmodar | 1 | Fire, Dark | Halves Lightning | Page | Weakness Verified |
| Hell’s Rider | 1 | Ice, Light | Skeletons Fire/Light | — | Weakness Verified |
| The Hunger (1st) | 1 | Ice | Kolobos Ruins | Page | Weakness Verified |
| The Hunger (rematch) | 1 | Light | Different key · escorts Fire/Light | Page | Weakness Verified |
| Siren | 1 | Lightning | Halves Water · Allure Charm | Page | Weakness Verified |
| Marauder (opt.) | 1 | Wind | Optional | — | Weakness Verified |
| Antlion (opt.) | 1 | Water | Foot ambush — use chocobo | — | Weakness Verified |
| Gilgamesh (opt.) | 1 | None | Scripted encounter | — | Verified notes |
| Liquid Thunder | 2 | Earth | Lightning nullified | — | Weakness Verified |
| Mom Bomb | 2 | Water | Fire halved | — | Weakness Verified |
| Adrastea | 2 | Lightning, Water | Shipyard escape | — | Weakness Verified |
| Guardian | 2 | Lightning | Timed escape | — | Weakness Verified |
| Aether | 2 | Ice | Wind Shrine | — | Weakness Verified |
| Leviathan | 3 | TBD | Lightning theme attributed only | Shell | TBD |
| Ch4–8 bosses | 4–8 | TBD | Expand S4 | Index | TBD |