YakiSOBA said:
Ohh.. so if I just play consistently I should have everything unlocked relatively soon (completing achievments combined with random drops)?
Sick!
More or less. The newest sets of items, known as the [urk=http://www.teamfortress.com/mannconomy/item_sets/]Polycount sets[/url], can only be had by finding them in random drops, or crafting.
A Basic Run down of Crafting.
2 Weapons from the Same Class -> Make 1 Scrap Metal
3 Scrap Metal -> 1 Reclaimed Metal
3 Reclaimed Metal -> 1 Refined Metal
Polycount weapons can be crafted with 1 Refined and and older weapon. But, since they can be ranodmly found, most people will trade them away for 1 scrap metal or less at this point. After you get a decent amount of duplicate weapons and there are a few of the Polycount Weapons you want to toy with but haven't founds, just try to kindly ask the people you are playing with if they have an extra Weapon to trade.
Now, onto anther topic, hats. Hats can be had a few ways.
1) Random Drops. These can take a while, you may be lucky and find one your first week, you may play for a month and not find one.
2) Crafting. You can get a random hat by crafting together 3 Refined Metals (This though is equal to 54 weapons), or the Polycount set specifcially hats for 4 Refined and an item from the Polycount Set. You can also get a new hat by crafting 2 random hats together, but at this point you are likely better to just trade it.
3) Item Shop! This one is new, if you want them fast you can just pay, but they aren't cheap, ranging from $5-$18. You do get a Mann Co. Cap for buying any item in the shop though, which is pretty nice, and there are $.49 items, so if you are willing to pay $.50 for a cap, you can.
4) Trading. Just like it sounds, you can trade most items in the game, though most of the time people are going to want hats for other hats.
Here is a Wiki on a bunch of this stuff to look over:
http://wiki.teamfortress.com/