Here's a detailed guide on how to defeat the Cryo Regisvine in Genshin Impact.
Image via HoYoverse.
The Basics
•Location: Mondstadt: Found in the Whispering Woods, to the northwest of Dadaupa Gorge.
•Element: Cryo: All attacks and defenses are centered around the Cryo element, dealing cold damage.
Combat Mechanics
•Initial Phase: The Cryo Regisvine starts with a protective shield made of Cryo energy. Breaking this shield is the first priority.
•Core Exposure: After breaking its shield, its core becomes vulnerable for a short time. This is when you deal the most damage.
•Regeneration: After taking enough damage or after a certain time, it regenerates its shield. This phase might include summoning Cryo structures or changing its attack pattern.
Attacks
•Cryo Blast: Shoots Cryo energy projectiles. These can often be dodged by moving continuously.
•Frost Explosion: Creates an area of effect that deals Cryo damage. Being caught in this can freeze you, so move out quickly.
•Vine Whip: Swings its vine-like arms across the ground. Dodge by jumping or moving away.
•Ice Spikes: Summons spikes of ice from the ground. Watch for where these appear and move away.
•Summon Cryo Crystal: Sometimes, it summons a large Cryo crystal that can act as a shield or explode. Avoid or destroy these if possible.
Strategy 
•Elemental Advantage: Use Pyro characters for Melt reactions or Electro for reactions like Overload which can break its shield faster.
•DPS Rotation: When its core is exposed, switch to your highest DPS characters to maximize damage.
•Avoid Freezing: Being frozen can be lethal. Use fire attacks or move out of Cryo zones quickly.
•Healing and Defense: Bring characters like Bennett for healing and Pyro application, or Diona for shields and healing.
•Positioning: Stay at mid-range to avoid close-range attacks while still being able to react to its projectile attacks.
Recommended Team Composition
•Pyro DPS: Diluc, Yanfei, Hu Tao, or Klee for direct Pyro damage and Melt reactions.
•Electro Support: Fischl or Beidou for Overload or Electro-Charged reactions.
•Healer/Shielder: Bennett for healing and Pyro application, or Diona for shields against Cryo attacks.
•Flex Slot: Xingqiu for Hydro application to set up Vaporize reactions with Pyro, or another Pyro character like Xiangling for additional Melt reactions.
Tips: 
•Elemental Reactions: Melt (Pyro + Cryo) is the most effective reaction, significantly boosting damage. Use characters like Diluc or Yanfei for consistent Pyro application.
•Overload (Electro + Pyro) can knock back the Regisvine, but it's less effective than Melt for damage. However, it can help in controlling its movements.
•Shield Breaking: Using Pyro characters or claymores can break its Cryo shield faster. Characters like Xinyan or Diluc are excellent for this.
•Mobility: Keep moving to avoid being hit by its sweeping vines or Cryo blasts. Dodge through or around its attacks.
•Environmental Interaction: The area has few environmental hazards, but being aware of the terrain can help in positioning to maximize your damage output or avoid attacks.
•Character Rotation: Swap characters quickly to keep up a constant stream of damage and elemental reactions. Use bursts and skills when the core is exposed.
•Focus on the Core: When the shield is down, focus all your firepower on the glowing core to maximize damage before it regenerates the shield.
•Use of Pyro: Besides doing damage, characters like Bennett can keep you warm, preventing freeze, and provide healing.
Rewards
•Crimson Agate (Sliver, Fragment, Chunk, Gemstone): Ascension materials for Cryo characters like Kaeya, Chongyun, Qiqi, Eula, Rosaria, etc.
•Glacial Driftseed: Unique drop used for ascending Cryo characters.
•Artifacts: You might receive artifacts from sets like Berserker, The Exile, Instructor, Gladiator's Finale, or Blizzard Strayer (which is particularly useful for Cryo characters).
•Companionship EXP: For increasing friendship levels with characters.
•Mora: In-game currency for various upgrades.
General Strategy Recap
1.Preparation: Equip your characters with the best Cryo resistance gear if possible. Bring Pyro for damage, Electro for reactions, and healers for longevity.
2.Execution: Start by breaking the shield with Pyro or physical attacks.
3.Once the core is exposed, unleash your strongest abilities.
4.Dodge or move out of Cryo zones to avoid freezing.
5.Use environmental features to your advantage, like dodging through its attacks.
6.Adaptation: If one strategy doesn't work, adjust your team or tactics. Sometimes, bringing more healers or focusing on a different elemental reaction might turn the tide.
7.Co-op Mode: If you find the Cryo Regisvine challenging solo, consider co-op. Multiple players can distribute the boss's attention, allowing for easier shield breaking and more opportunities for elemental reactions.
Fighting the Cryo Regisvine effectively requires balancing elemental reactions, good positioning, and understanding when to unleash your most potent attacks. With these tips in mind, you'll be well-equipped to gather the necessary materials for ascending your Cryo characters in Genshin Impact.
