Defeating Rex and Shulk is, without a doubt, one of the game’s most difficult boss battles in Xenoblade Chronicles 3: Future Redeemed. However, if you come up with a good plan, you can easily beat the pair and move on in the story.
Xenoblade Chronicles 3 Guide – How to defeat Rex and Shulk in the Future Redeemed expansion
The key to winning this battle is to heal only when necessary, and to keep HP-restoring arts like Daybreak Hymn and Great Garland ready to use. These two arts should also be added to the art palette so that you can use the Garland Hymn Fusion Art, which boosts Evasion, which is very useful for both Nikol and Glimmer, while also greatly restoring HP. When these two arts are on cooldown, use any other art in your kit as often as possible to build up Glimmer’s Talent Art Elysian Anthem, which is another excellent healing art.
Nikol and Glimmer’s Unity Combo is quite powerful and does a lot of damage, so use it as soon as possible. Because the two characters cannot combo, don’t be concerned about it being wasted on an unlaunched enemy, as dealing as much damage as possible in the shortest amount of time is your priority. Concentrate on Rex first, as he is the primary threat, and worry about Shulk later.
When it comes to gems, Steel Protection and Brimming Spirit should be used for Nikol, and Lifebearer and Lifesaving Expertise should be used for Glimmer.
You can make things easier on yourself by increasing the power of both of their weapons to their maximum level and by unlocking additional abilities on their Affinity Growth tree.
You can also use an Affinity Growth Kit, which is located to the left of the entrance to the Gotrock Oracle Ruins. Simply get on the rock platform to the left and keep going until you reach the end of the road, then move the camera around to find the platform and jump on it to obtain the Affinity Growth Kit.
If you follow this strategy, you will have no trouble defeating Shulk and Rex in Xenoblade Chronicles 3: Future Redeemed.
