MapleStory/Silent Crusade

The Silent Crusade is a quest line as well as a feature that was added in the Chaos patch and updated twice more, once during the Alliance Rising patch and again in the Mutiny patch.

UI window
If you press, (comma), you will bring up the Silent Crusade window by default.

Quests
The Silent Crusade quest line becomes available at level 75 when Jake the Subway Worker tells you to come at once. You will receive an item that will teleport you there if you want to do it. At the subway, don't buy a ticket but enter the subway construction site. You will appear on a special map. Talk to the woman there who says her leg hurts and she can't move. Defeat the Black Wing monsters. Talk to her again and enter the portal closest to her to defeat Crimson Rock (a boss). Go back to her and her leg will be fine. Complete the quests and leave through the portal on the far left. Use the item she gave you to go to the Excavation Camp (outside of Perion). Talk to her there and she will tell you to go to the Mysterious Gate further inside of the Excavation Site. Find her, enter the gate, and defeat the Skeleton General inside.

You're now initiated into the Silent Crusade. To continue, you must pursue stronger and stronger corrupted bosses. You can find out which ones you still need to defeat by opening up the Silent Crusade window.

Bosses
Most Silent Crusade bosses are as strong as their regular counterparts, but have more HP. Most of them are darker versions of the original versions.

Tier 1

 * Over Timer (level 75)
 * Zeno Eclipse (level 78)
 * Deo Ghameq (level 80)
 * Master Dummy (level 86)
 * Deet and Roi (level 96)

Tier 2

 * King Centipede (level 100)
 * Master Hoblin (level 106)
 * Master Harp (level 113)
 * Master Birk (level 117)
 * Kentaurus King (level 119)

Tier 3

 * Chimera (level 120)
 * Manon (level 125)
 * Griffey (level 130)
 * Papulatus (level 135)
 * Lich (level 140)

Tier 4

 * Pianus (level 140)
 * Leviathan (level 145)
 * Dodo (level 150)
 * Lilynouch (level 155)
 * Lyka (level 160)