Base game: (17) (uncertain)
Gold Rush Update (39) 29/4/08
*** Spoiler - click to reveal ***
The Trauma Queen achievement in Team Fortress 2 worth 15 pointsDeploy 3 ÜberCharges in less than 5 minutes, and assist in 5 kills during that time.
The Sawbones achievement in Team Fortress 2 worth 19 pointsHit enemies with your bonesaw 5 times in a row without dying or missing.
The First Do No Harm achievement in Team Fortress 2 worth 20 pointsPlay a full round without killing any enemies, and score the highest on a team of 6 or more players.
The House Call achievement in Team Fortress 2 worth 16 pointsJoin a game that one of your friends is in and then deploy an ÜberCharge on him.
The Triage achievement in Team Fortress 2 worth 22 pointsDeploy an ÜberCharge on a teammate less than a second before they're hit by a critical explosive.
The Play Doctor achievement in Team Fortress 2 worth 15 pointsIn a team with no Medics, be the first person to switch to Medic after a teammate calls for 'Medic!', and then heal 500 health.
The Placebo Effect achievement in Team Fortress 2 worth 20 pointsKill 2 enemies in a single life, while having your ÜberCharge ready, but undeployed.
The Autoclave achievement in Team Fortress 2 worth 21 pointsAssist in burning 5 enemies with a single ÜberCharge on a Pyro.
Pyro Update (35) 19/6/08 - Note: The Milestone achievements first appeared when these did, however, they may not have been part of this update
A Heavy Update 19/8/08
Scout Update 24/2/09
Sniper vs Spy Update 21/5/09
Haunted Hallowe'en Special (5) 29/10/09
WAR! Update 17/12/09
Engineer Update 8/7/10
Scream Fortress Update 27/10/10
Title Update (1) 3/2/11
Hatless Update (1) 14/4/11
Replay Update (8) 5/5/11
Title Update 2: 1/7/11
Very Scary Halloween Special 27/10/11
Australian Christmas 2011 15/12/11
Pyromania Update 27/6/12
Mann vs. Machine Update 15/8/12
Spectral Halloween Special 26/10/12
Scream Fortress 2013 29/10/13
Two Cities Update 21/11/13
Love & War Update 16/6/14
Scream Fortress 2014 29/10/14
Gun Mettle Update (5) 2/6/15