YES I KNOW WHERE THERE ARE SOME!
( If Im Thinking Of The Right Thing )

You Want Spears Or Hammers That Have Special Effects That Are Always Found In The Game?

Spear: After Coming Out Of Ionas Dungeon U Will Find Apollo.
If You Agree To Help Him Find Shrimpo You Can Kill Shrimpo And Get Spear Of Atlantos. =D

Hammer: Im Not Really Sure If It Is Consistently In The Game. But Ive Always Had A Hammer Called
Deathblow... Found In The Small Cave SE Of Ars Magicana With The Polymorph Book
Found On The Tortured Corpse.

But I Definetely Know That The Spear Is Always In The Game

=D Hope i Helped =D