You must play Multiplayer and get experience to "Level Up" and after a certain amount of level ups you can unlock new weapons for kits.
You complete challenges that unlock body kits, then do daily challenges for a long while
The Battlefield stage is accessible in Super Smash Flash after you clear All-Star Mode as any character.
If you mean the orignal battlefield game (Battlefield 1942), then no, you do not, it is a standalone game.
Battlefield 2/python/stats/bf2/unlocks.py
You must play Multiplayer and get experience to "Level Up" and after a certain amount of level ups you can unlock new weapons for kits.
There are no claymores in Battlefield Bad Company 2, but they have C4 and anti-tank mines.
Sorry But NO
You unlock the revolver after achieving level 28.
Battlefield 3 does have Co-op mode, you can also unlock weapons for use in Multiplayer from playing Co-op.
You must have veteran status to unlock the FS2000.
Level 40
Unlock it by playing as a support.
Medics in Battlefield Bad Company 2 can drop med kits to heal team mates, but may also be used by enemies. Medics can revive team mates using the defibrillator, but not the enemy.
The PS3-PSN PlayStation Store. INFO: 1=Download the battlefield 1943 demo. 2=Buy the full game unlock in the PS Store. 3=Download the full game unlock. 4=Play it
rank up
It's a gun you unlock for assault kit and you need points for that kit to unlock it. (btw its f2000)