By getting XP from reviving teamates, kills, repairs, kill assists, compliting entire match, wining a match, resupplying your team with ammo, kill steaks ect.
you get it on level 34
Level 40
Is what a good set up for battlefield 3 you haven't shown us anything.
no
You can get the UMP-45 at level 16 in Battlefield 3 on the Assault class. Other classes may work I am not sure on that though. So, just keep getting points and progressing in the game and you will get there.
It depends on the weapon you are trying to master. In Battlefield 3, weapon attachments are earned through experience gained from using weapons, rather than the level/rank of your actual soldier. Follow the related link below for a detailed structure of the weapon unlocks in Battlefield 3.
At the rank 30
You must play Multiplayer and level up each time you level up you will be able to unlock things.
No, Battlefield 3 does not follow the Bad Company series storyline. Battlefield 3 is a sequel to Battlefield 2.
the highest level you can get in battlefield bad company 2 is level 50
You can't. There is no level limit in bf3 beta as far as i know.
battlefield... definately battlefield...