Rust Fiend

The Rust Fiend is the boss of the Rift branch level: The Factory.

Behavior
The Rust Fiend will stand idle at the bottom of the Factory until a player enters its arena. After that, it will open with summoning 2 mechanical spiders, and releasing charges of electricity.

Strategy
Always pay attention to the electricity charges. The floor of the arena is lined with tiles that will conduct the electricity upwards, through the platforms. The ceiling also has these tiles.

If you can, have 4 electricity resistance before entering the arena. It will make the boss fight significantly easier. Bows will also make this boss easier.

Be aware that the Headbutt attack can put you in stunlock/knockback loop if you are careless. It is highly recommended that knights should not attempt to reflex stance the headbutt attack, as that will put them into the stunlock/knockback loop as well.

Champion Variant
The champion variant has a blue coloration, and possesses faster speed in its movement and attacks.

This variant will summon mechanical spiders more often.