Weapon damage in NieR: Automata varies with each swing. Upgrading reduces this damage variance while boosting potential damage per hit.
The Iron Pipe boasts the game's widest damage range but also possesses exceptionally high potential damage. Its effectiveness is unpredictable, but it's a worthwhile acquisition. Here's how to find it:
The Iron Pipe is a rare fishing reward found in sewers. Both sewers offer the same drop rate; the first is more easily accessible. Fast travel to the Resistance Camp, then head right towards the Amusement Park. After crossing a small gap, you'll find an open manhole under a highway.
Descend into the sewer, enter the water, and begin fishing. Several junk items are also available, which can be sold. There's no guaranteed method to increase your chances; obtaining the Iron Pipe may take only a few casts or several minutes. Use your Pod's light to improve visibility in the dark sewer and track the item's underwater movements.
A second sewer is located en route to the Flooded City.
The Iron Pipe maintains a significant damage spread regardless of upgrade level. However, successful hits can yield some of the game's highest damage outputs. This weapon is obtainable relatively early in the game. Upgrade requirements and resulting stats are: