Give Items:
After pressing ~ to pull up the console type in the following code

give <Item name> <amount> - example give BazookaAmmo 100

noclip - no clipping mode

Items to use with give command above

Colt45Ammo
BazookaAmmo
MachineGunAmmo
Backpack
RifleAmmo
Machete
Colt45
Bazooka
Rifle
Bazooka
Machinegun
Landmine