*Note - RES above 100% does not make them immune to the damage. The damage calculation changes for resists above 75%.
Tips & Mechanics
Weak Point - Face
Unless you are able to take him down before he is able to shield, always bring
against the Hydrogunner. He is extremely resistant to all damage while shielded. Trying to defeat it while the shield is up will lose a lot of time.
Since he can heal allies, you should prioritize the Hydrogunner if he is present. The **Shield **is also particularly tough to get down compared to other Fatui. Bursting him down before he is able to shield can save a lot of time.
While shielded, the Hydrogunner Legionnaire gains +100% RES to all types of damage, making it extremely resistant.
is the most effective against the shield.
is ineffective at breaking the shield, but can Freeze the Hydrogunner.


will also damage the shield, but are very ineffective
This attack won't be used while Shielded.
Charges up, then shoots a projectile at the player, dealing Hydro DMG Charges up, then shoots a projectile at an ally, healing them The healing occurs over time, and lasts about 5 seconds.
Once the shield is broken, the **Hydrogunner **will be stunned for about 8 seconds.