A.The answer to the clue "Heavy mallet, 6 letters" is hammer. In Norse Mythology, Thor, god of thunder and lightning, has a hammer called Mjolnir.
Q.What weapon did thor have
A.Mjollnir was the hammer belonging to the Norse thunder god, Thor. It hit whatever it was aimed at and returned to his hand. He guarded the world with it.
Q.How do you get to the fourth hammer in tomb raider underworld
A.To get the 4th hammer (Thor's hammer) in Tomb Raider Underworld, you must defeat the end of level boss - a giant yeti thrall. It takes a lot of bullets.