This encounter’s Heroic mode is a huge step up in difficulty from the preceding 11 bosses. We’re looking to smooth out that spike somewhat, while still keeping the fight quite challenging. The following changes apply only to Heroic difficulty: We are reducing the unavoidable raidwide damage inflicted by Magnetic Crush and Shredders’ Overload, as well as the damage from Superheated (to make belt groups’ lives a bit less painful when an Overcharged Laser is active). We’re also reducing Disassembled Turret health.
Finally, on 10-player Heroic only, we’re reducing the health of Crawler Mines, since 10-player raids have fewer available tools to keep them controlled.