Field Guide
October 4, 2026 · 1 min readApproved by Justin on October 5, 2026Drafted with AI tooling; reviewed and approved by Justin.GUIDE

Marathon Destroyer Ankle Breaker Core: Master the Thruster

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What Ankle Breaker Actually Does

Ankle Breaker is a Deluxe core for the Destroyer - Combat shell. Its effect: your Thruster generates less heat while a hostile is nearby. It costs 200 Credits and is unlocked through the Sekiguchi - Faction Upgrade, Destroyer+.

The Thruster is one of the Destroyer's traits, described as boosters that thrust you while airborne. Using it builds heat, and Ankle Breaker reduces that heat build-up when an enemy is close.

What We Don't Know Yet

The size of the heat reduction has not been published, and neither has how close a hostile has to be to count as "nearby". We won't give a number or a distance until we can measure them in-game or find them in a Bungie source.

Who It Suits

Our Read
because the effect depends on a hostile being nearby, it benefits players who use the Thruster during close fights rather than for crossing open ground. If you often run out of Thruster heat in the middle of a fight, Ankle Breaker addresses that directly. If you mostly use the Thruster for traversal with no enemies around, it won't help. This is our analysis, not a Bungie claim.

Takeaways

- Ankle Breaker reduces Thruster heat only while a hostile is nearby, so its value depends on how close your fights are.

- It is a Deluxe core and costs 200 Credits.

- The exact heat reduction and "nearby" range are not published. We will update this page when they are.

- Map your Energy investment before you commit it with the [Cradle planner](/marathon/cradle).

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