All the mana,health,minion and spell objects are optional however the game is extremely hard without atleast 1 health 1 mana 2 minion objects. anger and flamethrower r also very importent.

Tower heart Slave camp Halfling homes Halfling party Melvin

Sir William

Castle spree (health object on the right before u enter the castle) Bloody unicorns Anger spell object (level 1 minion spell) Root node 1 (on the first right after the first time u see Oberon) Green minions Root node 2 (on the left after u exit the viridian caverns) Mana object (opposite root node 2) Mana object (near the succubus in the heavens peak swamp) Blue minions understreets Flamethrower spell object (level 2 fire spell) (in the market area after u exit the understreets) Halfway to heaven inn (minion object straight forward the moment u see lots of red dawn people) Sir William

Oberon

Choose rose as your mistress Root node 3 (Follow the path on the right of the shield spell object near Oberon) Skull den (mana object on the left on the way to getting route node 4) Mother goddess temple (berserk spell object) (level 2 minion spell) (at the end of the temple) Oberon

Goldo

Temple construction site (minion object near the mother goddess statue) Health object (follow the path on the raised platform near the wheel that lets your enter the brewery) Brewery

Jewel

Ruborian desert Capture jewel

Khan

Free spree Khan

The wizard

Spawning pits The wizard

Hope this helped :)