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The major content patch for Team Fortress 2, and was released on September 30, 2010 Patch. In total, the update added 65 new items including community-contributed content from the Polycount Pack contest, new hats, weapons, mini-games, tools, crates, and packs of hats and weapons. The update also introduced the Mann Co. Store, Steam Wallet, and microtransaction system as well as item trading.was a
The Special Delivery
+25 max health on wearer
The Tank Buster
+20% sentry damage resistance on wearer
The Gas Jockey's Gear
+10% faster move speed on wearer
+10% bullet vulnerability on wearer
The Croc-o-Style Kit
The wearer cannot be killed by headshots
|Darwin's Danger Shield|
The Saharan Spy
Reduced decloak sound volume
0.5 sec longer Cloak blink time
|Your Eternal Reward|
|Gloves of Running Urgently|
|Dr's Dapper Topper|
|Mann Co. Cap|
Left 4 Dead 2 promotional items
|Engineer and Spy||Frying Pan|
These items are given to those who purchase Left 4 Dead 2.
As the update was introduced, all of the items which were previously obtained became "Vintage Items". Their name is now rendered blue, and the "Vintage" prefix was added to their name. According to Valve, "some items that used to be rare will become more common when they are available for purchase. (...) This way, those older rare items remain rare (in fact, they're even rarer, because they're limited editions now). "
Some exceptions were promotional items, including but not limited to the Cheater's Lament, Alien Swarm Parasite, Lumbricus Lid, Mildly Disturbing Halloween Mask, Bill's Hat, Ghastly Gibus, and Earbuds, as well as all the medals and craft materials.
Unusual hats are hats that have special particle effects about them. The only way to obtain an Unusual hat is by unlocking a Mann Co. Supply Crate with a Mann Co. Supply Crate Key, or by trading for one. The different particle effects are viewable here.
New methods to obtain items
Trading is an in-game system allowing players to swap weapons, hats and misc items allowing players to obtain items that they desire. Some items, such as the Golden Wrench and store-bought items are 'untradable', meaning that they must remain on the original account that obtained them.
As of now, it is possible to trade with players on a player's friends list, with other players in their current server, and through either player's Steam Community ID.
The Mann Co. Store is an in-game micro-transaction service. The store allows players to purchase in-game items such as hats, weapons, and action items using money stored in their Steam Wallet. Creators of community-contributed items receive a percentage of sales for anything they've created.
All hats or weapons bought through the store could not be crafted or traded, though they were giftable. Tools and action items bought through the store could be traded (after 2 days) and gifted. As of the Manniversary Update, all items bought from the store can be traded after a waiting period of 2-3 days, but still cannot used in crafting.
Full summary of the new Item Sets