The nine bladed sword.  A great berserker weapon, it is ridiculously heavy and difficult to wield.  It is crescent shaped, with the handle being one fourth the way up the length of the back.  Now, the sword does not have nine individual blades, but rather has a jagged edge with nine jags (or whatever you would call them).  It was designed to wrend through armor, and it serves its purpose quite well.

The three bladed spear.  Another berserker weapon, this heavy lance has two blades on either side of the shaft just behind the head.  This was designed to both help compensate for their lack of speed (as one of the blades might catch the enemy) as well as to cause more damage with a direct hit.