Hero Siege Book of Soulforge - Every Page Location

The Book of Soulforge is collected page by page from act bosses. Each page is a chance drop, so a single kill is often not enough — plan on repeat runs rather than one clean pass.

Where does each Book of Soulforge page drop?

Page	Boss	Location
11	Gurag	1-5 King’s Garden → Northern Post Dungeon → Room 4: King’s Throne
12	Reaper	2-5 The Glacial Trail → Chilling Cavern Dungeon → Room 4: Death’s Breach
13	Anubis	3-5 Pyramid Level 2 → Sewers of MosArathim Dungeon → Room 4: Tomb of the Fallen King
14	Damien	4-5 The Devil’s Breach → Lair of Corruption Dungeon → Room 4: Altar of Lost Souls
15	King Karp	5-5 Temple of Zamjo → Temple of Fishes Dungeon → Room 4: Emperor’s Chamber
16	Satan	6-5 The Depths of Hell → Hollowing Sanctuary Dungeon → Room 4: Seventh Layer of Hell

Note the pattern: every page is in Room 4 of its dungeon, and the acts run in order 1 through 6. Once you know the shape, you do not need to look up each one.

Can you combine this with unlocking Hell?

Yes, and you should. These six bosses — Gurag, Reaper, Anubis, Damien, King Karp and Satan — are exactly the six required to unlock Hell difficulty.

If you are working toward Hell anyway, you are already killing every boss that drops a page. Doing both at once saves an entire pass through the acts, and because pages are chance drops you will likely need the extra kills regardless.

Why is my page not dropping?

Because it is a chance drop, not a guaranteed one. The quest text says so directly: the page may require multiple kills to receive.

One location-specific catch worth knowing: Satan’s page 16 drops further north than the normal drop position. If you have killed him and seen nothing, check further up the room before assuming it did not drop.

What about pages 1 to 10?

These six are pages 11 through 16. Lower-numbered pages exist and are not covered by this questline’s boss drops — the numbering implies an earlier collection stage that these sources do not document.

Next step

Run these while pushing toward Hell rather than after — the same six kills serve both, and chance drops mean you will want the repeat attempts anyway.