Eyelander

They eyelander is a melee weapon for the demo. It begins spawning on the second level of the forest on the first loop. It swings once every 0.4 seconds unhasted. It has an unusually long range for a melee weapon. It does 6 damage, as much as most melee weapons do when they crit.

Strategy
Add a few haste addons to it, hold down left mouse and you can enjoy near complete immunity from ranged attacks.

Toss some health leach on to your eyelander to make a berserk attack a viable strategy for much of the game. Having an eyelander with health leach practically gives you the alpine levels for free, not that they are all that tough in the first place.