The Rockbreaker is a mole-like machine with a massive health pool and many components.
Focus on attacking its digging arms first in order to stop it from being able to tunnel into the ground and attack from below. Tearblaster arrows will not break off the arms.[More testing needed] If it does dig underground to attack the player, sneaking will make it unable to attack them, as it is completely blind. After Aloy has disabled the digging arms, the Rockbreaker will only be able to slither after her on the ground. Focus on its Blaze Sac on the underside and the exhaust ports on its back.
|Metal Shards||Crystal Braiding||Blaze Canister||Echo Shell|
|Rockbreaker Lens||Rockbreaker Heart||Machine Core - Large|
|Acquisition Class||Charger - Lancehorn - Rockbreaker - Scrapper - Snapmaw - Trampler|
|Combat Class||Fire Bellowback - Freeze Bellowback - Sawtooth - Stalker - Stormbird - Ravager - Thunderjaw|
|Recon Class||Watcher (Redeye Watcher) - Glinthawk - Longleg - Tallneck|
|Transport Class||Behemoth - Broadhead - Grazer - Shell-Walker - Strider|
|Other||Corrupted Machines - Corruptor - Deathbringer - Metal Devil|