Unlockables

“

Now that is how it's done! Click to listen — The Sniper on unlocking new items

”

By completing various achievements in Team fortress 2 or select other Valve games it is possible to unlock new items.Some such as the [Dead Ringer] are simply normal items given to players once the achievement is completed others like the [Tricyclops] are rare items only obtainable through an achievement.

Milestone Unlockables

These items are given to players once they complete a set number of achievements for a certain class.They are normal items and can be found via drops or purchased.

Non Team Fortress 2 unlockables

There are a variety of Valve and or Steam games that have unlockable items such as [Poker night at the inventory] which contains 5 items.