Undertow
12 Achievements
200
15-20h
Xbox 360
Xbox One
Xbox Series
Hydropwnage
Win a ranked Conquest match by taking all of the control points (get a shutout)
20
How to unlock the Hydropwnage achievement in Undertow - Definitive Guide
JohnTheGamer
TrueAchievements
TrueAchievements
Simply get a friend and host a ranked mode of Conquest. Then have him let you take control of all the bases, then kill him. Don't kill him before you gain control of all the bases though.
darquesyde
If you can't get this legit, find a boosting friend. Determine a map and host a Multiplayer Verses Ranked game. Set it for 2 players and the map you both agreed on so your friend can find your game. Capture all of the control points. You can also tie this one in with the "Arsenal" achievement if you set the Round Duration to "No Limit."