Game developer Valve released the final details on its upcoming Team Fortress 2 content update during a party in downtown San Francisco. Although I have never played TF2, from all the comments this update sounds like a big deal, and most of it will be directed to the medic character in the form of three new weapon replacements dubbed "The Blutsaugher", "The Critzcrieg" and "The Ubersaw". The weapons will be earned through a new achievement system, and equipped through a loadout menu. Below you can check out Valve's official descriptions for the weapons.

The Blutsaugher
For players that earn one third of the 36 new medic achievements, they will be given a new syringe gun. Called "The Blutsaugher," this new weapon no longer has the ability to score critical hits against an opponent. Instead it will draw health from enemies each time a syringe hits. Especially useful as a weapon to retreat away from the fight while staying alive.

The Critzcrieg
Once a medic has earned two thirds of the achievements, they will be granted "The Critzcrieg." This new medigun uses its ubercharge not for invulnerability, but to give its recipient 100% chance to fire critical ordinance. Medics and the player they are charging need to be careful though, because as much fun as it is to fire critical rockets as fast as you can, the other team will see what you're up to and try to put a quick stop to your plan.

The Ubersaw
For the determined medic that has earned all 36 of the new achievements, they will find themselves the proud owner of "The Ubersaw," which will take damage done in melee attacks and convert it directly to ubercharge. Four hits with this new weapon will fully charge whatever medigun the medic has equpped.