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To unlock the free Olympia in Rex Infernus, buy the M10 Breacher wall weapon, Pack-a-Punch three other unique guns, prepare Astral Flame at the Nexus Forge, then use it on the glowing M10 Breacher during a rainy Deathspinner round. Defeat the Web Mother, pick up the unstable Olympia, and take it straight to Pack-a-Punch to stabilize it.
Choose the Olympia branch before starting the quest
At Caltheris Entrance (also called Caltheris’s Passage), buy the M10 Breacher wall weapon to select the Olympia reward. The alternative is the M34 Novaline, which selects the Corrupted TR2. The quest reportedly allows only one of these rewards per match, so choose the wall buy that matches the weapon you want before doing the setup. The weapon choices and reward limit are described in COD Central’s Rex Infernus guide.
Meet the shared quest prerequisites
Pack-a-Punch three other unique weapons
Pack-a-Punch three unique guns besides the M10 Breacher. The selected wall weapon does not count toward the three. Once the prerequisite registers, the M10 Breacher wall buy should glow during the rainy spider round, according to COD Central’s guide.
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Use the Void Claw to grapple an astral tear into Pack-a-Punch, then crank the wheel to surge the Nexus. The guides say this creates Astral Flame, which you can carry. Prepare it before the special round so you are not trying to complete the setup while the encounter is active. Both COD Central and MMOEXP’s Olympia walkthrough describe the flame, rain, and Web Mother sequence.
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Trigger the Web Mother encounter
- Wait for the rainy Deathspinner round—the spider round.
- Find the glowing M10 Breacher wall buy and aim Astral Flame at it.
- Defeat the Web Mother that spawns as a high-value target.
After the Web Mother is defeated, the wall buy offers the free unstable Olympia. Take it promptly: while unstable, the weapon drains your health. COD Central reports that you must claim it before the same special round ends.
Stabilize the Olympia at Pack-a-Punch
Carry the unstable weapon directly to Pack-a-Punch and run it through the machine. The guides describe this as free stabilization, resulting in a level-one Pack-a-Punched Corrupted Olympia, also called Corrupted Pluto in game. Do not detour after picking it up; the health drain makes a direct run the safer choice.
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What to expect from the Corrupted weapon
The Corrupted Olympia is described as a shotgun, while the alternate Corrupted TR2 is a returning rifle. The guides do not establish which is stronger, so choose based on the weapon type you prefer rather than assuming one reward is objectively better. COD Central also warns that missed shots with the Corrupted weapon damage the player, making careful aim important.
Evidence and guide attribution
The sequence is reported by COD Central, whose guide was published August 30, 2026, and MMOEXP, whose guide was published August 26, 2026. These are third-party gameplay guides; no official developer guide or patch note confirming this side quest was found. The steps above reflect those guides and are not independently tested here.
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