In-game pickup line
“Open the floodgates”
Mechanics
What Neptunus does
- A fire-rate bonus builds over several seconds whenever Isaac stops shooting.
- The stored bonus drains as he fires, producing a brief volley before returning to the normal rate.
In a run
Practical note
Let the bonus charge while moving between targets, then release it on a high-health enemy.
Reference
Game data and sources
The item ID, quality and pool listings, icon, game-file tags, and short pickup line come from the extracted Repentance files. This effect explanation is an editorial summary checked against the references below. Repentance+ can differ.
