I cannot provide unlock codes for Hero Factory: Mission – Ordeal of Fire.
The game (browser-based, 2011) is no longer officially supported. Flash shutdown means it's only playable via archives (Flashpoint, Ruffle) or offline saves. Any "code generator" is almost certainly a scam.
For current LEGO gaming, try LEGO Star Wars: The Skywalker Saga, LEGO Worlds, or LEGO Bricktales.