BFG (M249 SAW) in City Streets level
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Black Ops difficulty setting
Finish the game on the hard difficulty setting.
Finish the game under the Black Ops difficulty setting to unlock the M16A2 (M16 with grenade launcher) for use on any difficulty setting.
How to beat enemies
Use destructive objects to your advantage to shock, hurt or even kill your enemies.
How to beat enemies with shields and body armor
There is no real secret to use with enemies with full body armor. Head shots will not work; just shoot. For enemies with shields, use grenades or RPGs. Or, get behind them and kill them by shooting them in the back.
Faster M16A2 reload
With the M16A2 in Black Ops mode. the lag-time on the reload for the grenade launcher is long. Immediately after you shoot a round, switch weapons then switch back quickly and it will be reloaded for you.
Quick suppresser set
When you are in the middle of putting a suppresser on your weapon and enemies appear, fire and the suppresser with be on with your weapon going instantly into firing position.