|Fortress of Erosion|
|Location||Erosion Gate, via Boundary Gate in Saint Haven|
|Recommended Levels||At least 60|
|Party Size Limit||Two players|
|Entry Limit||2 runs per week|
Fortress of Erosion is an instance that replaced Dark Lair. Using Monster Cards found in nests below Level 60, players attempt to break through swarms of enemy monsters while transformed into monsters themselves.
Monster Cards Edit
The Fortress of Erosion cannot be accessed until players have a Monster Card to use. These cards, usually sold at Gosuk's Erosion Store, determines which monster the player would transform into, as well as the player's role as soon as a game is started.