Find the dragon's head
Close the second portal
Getting into the Dark Forest
2 health boxes destroed
Close the first portal
Open the first portal
4 lich-shooters killed
2 lich-shooters killed
Collect 500 souls
Collect 400 souls
Collect 300 souls
Collect 200 souls
Collect 100 souls
Two wasps killed
2 barriers destroyed
Close the third portal
Get into the catacombs
Get into the crystal forest
Close four portals
Destroy the Sentinel