There is ammo bug in game
You can shoot to everything by x4 and after relog or portal jump you'll have your ammo back
Just test it
Short example:
EDIT: This bug works with booty keys tooQuote:
1. Look at your ammo status (by example 15.756)
2. Kill some aliens
3. Look at your ammo status again (now you should have about 11.435)
4. Jump to other map OR relog and you should have back 15.756 ammo![]()






