Thanks for the report on Staff of Eternity! The checklist fix is already included in the next update.Some Bugs I've noticed : Firstly this mod's bosses don't remain "checked" in Boss Checklist. The "check mark" after defeating the bosses disappears after leaving the world.
And the Staff of Eternity's minions deal really low damage from their demon scythe projectiles. And their scythes deal magic damage ?(Noticed from Colored Damage Mod).
Great to see the mod is doing well !