This directory starts with the encounters named in the evolution evidence. Bosses and minibosses are grouped by Act so you can connect a farming goal to the right area.
Act bosses and evolution targets
| Act | Heartblood encounter | Bloodlines listed |
|---|---|---|
| Act 1Sunmeadow Wilds | Slime King | Dwarf · Celestine |
| Act 2The Dungeon | The Crypt Lord | Nightborne |
| Act 3The Cursed Forest | Mother Blight | Human · Sylvan |
| Act 4Moonstone Rise | Ancient Sentinel | Seraph |
| Act 5The Underworld | Malgrath, the Lord Below | Ashborn · Goblin |
| Act 6The Withered Meadow | Grimsow, the Rot Shepherd | Mushroom |
| Act 7The Drowned Cathedral | The Tolling Bell | Vesper · Tideborn |
| Act 8The Glass Wastes | Vitrea, the Glass Wyrm | Stonekin |
| Act 9The Hollow Sky | Aurelion, the Fallen Star | Dullahan |
| Act 10The Heart of Blight | The Hollow Light | Slime |
Transcribed from the reviewed OyO video table at 1:32. It does not establish current difficulty or drop percentage. Open the material finder →
Secret boss questions
The community Bestiary directory also names unusual encounters such as Just A Rock, Chonk and Todd from Accounting. Their names alone do not establish a shared spawn chance or a universal drop table.
We do not repeat a 0.5% spawn rate without the supporting test or current in-game evidence. Open the in-game Encyclopedia for the encounter and difficulty you are facing, then compare its listed moves and drops.
Before a difficult boss
Sources & review notes 3 references
Reviewed October 23, 2026. Published reports are distinguished from developer statements and our own editorial suggestions.
October 14 video. Frames reviewed at 0:20, 0:52, 1:05 and 1:32 on October 23. Visual creator report, not our own drop test.
Enemy names and regional classifications; use the linked game captures for the particular difficulty.
Creator walkthrough: town 2:15, upgrades 3:04, pets 3:29, progression 4:17, Bestiary 5:15. Chapters cross-referenced with pixellineage.com.