Achievement guide

This is a list of all achievements available in Team Fortress 2 Classic, alongside a short guide on how to complete them. There are currently 99 achievements, available in six "packs".

Some achievements' descriptions are not helpful, are unintuitive or merely jokes, so this page aims to clear up any confusion that could arise from this.

Achievements cannot be earned while sv_cheats 1 is enabled on the server the player is on.

Team Fortress 2 Classic Pack

Achievement	Guide
A Calculated Accident	This achievement requires you to be playing as a Soldier with the R.P.G. equipped. Playing in open maps like 2Bridge and Dustbowl is recommended for this achievement, as well as any gamemodes where many enemies would need to cluster in a small area, like Payload or CP. If you aren't in a map with large sightlines, when you are approaching the frontlines, try firing off a few shots at an upward angle towards where any enemies may be on the off-chance that you hit someone. This is made easier by the fact that the R.P.G. has no damage falloff, so there's no need to worry about not being able to finish off enemies at long range.
KA-BLOOIE!	This achievement requires you to be playing as a Demoman with the Dynamite Pack equipped. The Dynamite Pack does enough damage to take out both a level 3 Dispenser and Sentry, alongside the Engineer if he is absent-minded enough. The Engineer poses a problem, as he can disable your Dynamite Pack with a single hit from his Wrench, so throw it at an Engineer's nest while he is absent or dead, and have it destroy his Buildings. You can also use it on Teleporters or Jump Pads, which are often left unattended. Repeat this until you've destroyed 5 of any buildings with the Dynamite Pack.
Fuse Refusal	As discussed above, this achievement requires you to be playing as an Engineer. Either wait for a Demoman to toss some Dynamite your way, or leap into the fray and defuse any packs thrown at your teammates. To defuse it, simply hit it once with your Wrench within 2.5 seconds of it being thrown. This achievement is relatively simple, as the Dynamite Pack is a popular pick for Demoman players, and you only need to do this once to get the achievement. However, its short fuse time and the ability of the Cyclops to immediately detonate the pack will pose an issue to you if you are attempting to get this achievement.
An Experienced World Traveler	To get this achievement, you must play one full round on Dustbowl, 2Fort, Badlands (Control Points), Casbah and Well (Capture the Flag). You can search for servers by map in the "Find Servers" tab, or simply play on official servers until the map rotation puts you on the ones you need.
Destructive Criticism	This achievement requires you to get lucky enough to play in a server with a Developer, Community Contributor or Beta Tester, and skilled enough to "dominate" them, by killing them 4 times without being killed by them once. If you do end up in a game with them, play as the class you are best at, or Spy, so you can target them without too much resistance.
Texan Predictability	This achievement requires you to be playing as an Engineer with the Coilgun equipped. Charge up the gun by holding down alt-fire, and once the bar turns red, it gains the ability to ricochet, or bounce off of surfaces. Enclosed, indoor spaces or chokepoints work best for this, like the tunnel in Dustbowl, and aiming horizontally will give you the highest chance of hitting someone. Ricochet shots off the walls around a corner or bend, and hope you hit a weakened enemy. Each bounce will lower the damage of the shot, and it can only bounce 3 times before dissipating, so aim carefully.
Deep Sleep	This achievement requires you to be playing as a Spy with the Tranquilizer Gun equipped. Shoot an enemy, then go in for the kill. Beware, as shooting an enemy will alert them of your position and existence but will also colorblind them, lower their speed and ranged damage and make them take guaranteed Crits from melee weapons, making it easier for you to finish them off with your Knife. Mind that a critical hit with the Knife only does 120 damage, and the Tranquilizer Gun only does 20 damage, so try to target a light class. Do this ten times to get the achievement.
Birthday Blowout	This achievement requires you to be playing as a Pyro. Similarly to the Fuse Refusal achievement, this includes the defusal of a Dynamite Pack, but by way of Airblast instead of the Wrench. The Dynamite Pack explodes after 2.5 seconds into four individual dynamite sticks, using the Flamethrower, alt-fire to extinguish their fuses. Either wait for a Demoman to throw a Dynamite Pack at you, or seek them out to airblast them yourself. Extinguishing 20 of these sticks will get you the achievement.
Badge of Shame	This achievement requires you to be playing in the VIP or VIP Race gamemodes. Approach the Civilian while he is alone or undefended, and just stand still. If he believes you are friendly, draw your melee weapon and hit him to provoke him. The Civilian's melee only does 35 damage, 105 on a crit, and he is unlikely to engage in combat, so try to corner him or put him in a situation where he believes he has no other choice but to engage you himself. Play as a non-threatening or "weak" class like Engineer, Sniper, Medic, or Spy to encourage him to attack you, and try to take some damage beforehand to make it easier for him to finish you off with his melee.