You can't, but you can delete all your Achievements and start over.
No, they will not. Only in the event of out-game idling would they do that.
Nothing happens, that information is saved to the steam servers. In other words they'll be there when you re-install
You can either delete items, craft weapons together, or buy a backpack expander/ get premium
If it is a screenshot or camera picture, there's a trashcan symbol in the bottom right. If not, the only way is to do it on your computer then sync it.
Yes. TF2 is a GREAT game, and I recommend you "buy" it. TF2 is now free to Play.
No, TF2 is not playable on a phone
TF2 is free-to-play
No you cannot trade weapons for beta tf2 to normal tf2. Beta Tf2 is considered to be a completely different game by steam. Therefore the two game's inventories are not compatible.
The heavy's name in TF2 is Dimitri Stanlevkov.
Try lowering your graphics settings.
mw3 is awesome very awesome for awesome people and this stupid tf2, the gun suck, everything in tf2 is suckish. play mw3, mw3 is the best and tf2 are for noobs and losers