Marathon Season 2 Nightfall Roadmap: Vault Breaker PvE, Cradle System, and Season 3 Perimeter Overhaul

New Content at Launch

• Night Marsh — a darker, horror-themed nighttime variant of the existing Dire Marsh zone .
• Sentinel Runner shell — a new defensive-focused shell .
• Two new weapons — the KKV and the D54 Battle Pistol .
• Eight new chips and a folding stock weapon mod .
• Sponsored Survival — an asymmetric experimental mode that ran through June 9 alongside a free-play week .

Cradle System (Season 2 Progression)

The Cradle is a new seasonal system that lets players level up WEAVEworms (cybernetic body enhancements) using WEAVEworm Energy earned in-game, giving direct control over Runner shell stat customization throughout the season . Players can reallocate Energy at any time, allowing for flexible builds . Importantly, no official source confirms a "Cradle Evolution" name or a specific cosmetic-reward layer tied to resets — the known system is focused on stat customization, not cosmetic unlocks .

Vault Breaker PvE Mode (July 21 Mid-Season Update)

• Vault Breaker is Marathon's first true PvE-only experimental mode, arriving with the mid-season update on July 21, 2026 .
• Players explore the Cryo Archive (a map originally designed for endgame raid content) solo, in duos, or in trios, tackling a series of progressively harder vaults .
• It features its own unique progression system that lets players increase power between vault runs .
• Players do not keep loot extracted from Vault Breaker — it is a separate, contained experience . A special currency called Vault Data can be extracted and used to upgrade Sponsored Kit gear or exchanged for universal equipment usable in other modes .

Quality-of-Life Improvements (Season 2)

A range of QoL changes shipped with Season 2, based on player feedback :

• Increased Vault capacity — a fully upgraded Vault holds more items .
• Faster faction progression and contract adjustments .
• Redesigned implants — perk listed first, stats fixed by rarity for quicker readability .
• Weapon cosmetics can now be customized directly through the "Inspect" screen .
• Signal Jammers are now purchasable from the Armory .
• New "toggle to open" voice chat option for Proximity and Team Chat .
• Refreshed icons for cores, implants, and chips .

Season 3 (Begins September 2026)

Start Date
Bungie confirmed Season 3 begins September 2026, following the conclusion of Season 2 . Some third-party sources estimate August 27, but the official window remains September .

Perimeter Overhaul
The major planned feature for Season 3 is a large-scale overhaul of the Perimeter map, one of Marathon's most-played zones . Bungie described the changes as "fun and mind-bending content," including updated map layouts, new Runner classes, and different gear . The broader roadmap also mentions new survival-type content for Seasons 3, 4, and 5 . Additionally, Bungie is planning onboarding improvements and contract system changes for Season 3 .

Important Caveats

• The Cradle Evolution system name does not appear in any available official sources. The Cradle system exists and focuses on WEAVEworm stat progression, but no source describes a "Cradle Evolution" name, a cosmetic-reward loop tied to resets, or a system that resets itself mid-season . That detail may come from a later Bungie blog post not yet covered by these reports.
• The September 22 date for the Season 3 Perimeter overhaul is not confirmed by any source in this evidence set. The official window is simply "September 2026" .
• No source explicitly uses the name Season 3 or describes the Perimeter changes as a full "overhaul" versus a significant redesign — wording varies. "Overhaul" is used here as the closest match to the Japanese-language source describing a "large-scale renovation" .