Unlocking REX in Risk of Rain 2 offers players access to a fascinating hybrid survivor that trades health points for powerful offensive attacks. Combining plant and mechanical components, this unique character requires careful health management and tactical skill management to master. Understanding how to acquire REX and utilize its abilities effectively will dramatically transform your survival strategy.
How to Unlock REX with the Fuel Array
Unlocking REX requires completing the Power Plant challenge by transporting an volatile Fuel Array from your initial escape pod. You must interact with the back of the pod at the beginning of a run to claim the equipment. Once acquired, you must navigate through three stages without taking damage that drops your health below fifty percent.
If your health drops below the fifty percent threshold, the Fuel Array detonates instantly and ends your attempt. Playing on lower difficulty settings like Drizzle can help mitigate damage during this tense challenge. Defensive items such as shields or defensive armor will also increase your chances of reaching stage four safely.
Finding the Broken Robot in Abyssal Depths
Upon reaching stage four, you must reach the Abyssal Depths map to find the inactive target. Search the upper platforms located near the center of the subterranean area to locate the Broken Robot. Simply interact with the unit while holding the Fuel Array to complete the repair quest and permanently unlock REX.
If your run generates Siren's Call instead of Abyssal Depths, you will need to loop your run or start over to access the proper environment. Planning your routes carefully across early stages ensures you retain the Fuel Array until the proper stage appears. Successful repair instantly adds REX to your character select menu for future runs.
Primary and Secondary Abilities Explained
REX features a default passive skill called Natural Toxins, which applies a Weaken debuff that reduces enemy movement speed, armor, and damage output. Its primary skill, DIRECTIVE: Inject, fires three syringes that deal damage while healing REX on the final hit. This primary fire forms the core foundation of REX's self-sustain mechanics.
For secondary attacks, Seed Barrage spends fifteen percent of your health to launch a high-damage mortar with zero cooldown. Alternatively, DIRECTIVE: Drill can be unlocked to rain seed bullets without spending any health. Balancing these options depends on whether you prefer high burst damage or safer resource management.
Utility and Special Abilities Overview
The utility skill DIRECTIVE: Disperse creates a sonic boom that knocks back enemies and applies the Weaken status effect. Players can also unlock Bramble Volley, which costs health to launch a push attack that heals REX for every enemy hit. Airborne use of either utility skill propels REX backward for quick tactical repositioning.
REX's primary special skill, Tangling Growth, spends health to spawn a flower that roots surrounding enemies and pulls health back to REX. The alternate special skill, DIRECTIVE: Harvest, shoots a bolt that marks enemies to drop healing fruits upon their defeat. Mastering these abilities allows players to continuously cycle health spend and recovery during intense combat encounters.
