What all do need to do before I beat Morgott?

[mathtes]

Are there any missable bosses/summons/weapons I may have missed? I want to get the platinum in the game. I already got the weapon that is in the giant sword of the capital

[Grad]

don't worry, you are about halfway through the game
Go grab the Bolt of Gransax before you go to the mountains otherwise you will forget and you will have to start new game since the capital changes from events at the end.

[Sure, Not]

maybe the volcano manor quest ?
theres one assasination contract target in leyndell capital, its a red sign mark on the ground inside the round table hall of leyndell capital