The Heavy Update Title update for Team Fortress 2 has 38 achievements.
Kill an enemy with your shotgun while you're out of minigun ammo.
In a single life, get shot, burned, bludgeoned, and receive explosive damage.
Kill 10 enemies in mid-air with the minigun.
Take 1000 points of damage in a single life.
Achieve 10 of the achievements in the Heavy pack.
Achieve 16 of the achievements in the Heavy pack.
Achieve 22 of the achievements in the Heavy pack.
Kill 50 enemies within 3 seconds of them attacking your Medic.
Kill 10 enemies with a Medic assisting you, where neither of you die.
Earn a domination for a Medic who's healing you.
Kill an enemy with a taunt.
Kill 10 enemies carrying your intelligence.
Work with a friendly Medic to kill an enemy Heavy & Medic pair.
While invulnerable and on defense, block an invulnerable enemy Heavy's movement.
Block the enemy from moving the payload cart 25 times.
Get ÜberCharged 50 times.
Kill 20 enemies while being recharged by a dispenser.
Get 25 enemy kills where you either assist or are assisted by another Heavy.
Remove 20 stickybombs by killing the Demomen who produced them.
Kill 50 enemies while both you and your victim are underwater.
Get 20 kills on players that you're dominating.
Survive a direct hit from a critical rocket.
Get 1000 assists.
Kill or assist in killing 10 cloaked Spies.
Kill 5 enemies without spinning down your gun.
Fire $200,000 worth of minigun rounds in a single life.
Kill an enemy with a critical punch.
Heal 1000 damage with med-kits in a single life.
Be the first on your team to start capturing a control point in a round.
Get 50 caps on payload maps.
Kill 25 enemies while you're standing on a control point you own.
Kill 15 enemies capturing a control point you own.
Help 5 teammates get revenge on their nemeses.
Kill an enemy in the first 5 seconds after you exit a teleporter.
Provide an enemy with a freezecam shot of you taunting while invulnerable.
Eat 100 sandviches.
Kill 50 Scouts using Natascha.
Kill 10 Heavies with The K.G.B.