combineoverwiki.net/wiki/Capture_The_Flag_Power-Ups
1)Accelerator (death) Increases all damage inflicted with any
weapon used by the owner, including self-damage.
2_Backpack (ammo) Gives a standard ammo box for every
ammunition type in the game upon picking up; regenerates
ammunition for the currently selected weapon at a rate of 1
bullet every 0.5 second (expect in the case of Submachine Gun
grenades where the rate is 1 grenade every 10 seconds); doubles
the clip size of the currently active weapon as long as that
weapon can regenerate ammo, or isn't a single shot weapon, such
as the RPG. The Backpack Power-Up will not regenerate Satchel
Charges, Laser Trip Mines, or Snarks.