Various hints

Instant Grenade Explosion

You can not prime grenades in Black, and enemies will often run away from grenades the moment they see them. To make your grenades explode instantly, shoot them with your guns. You dont even have to be totally accurate.

No-Blur Reload

When you need to reload, hit the reload button and quickly press the melee attack button to cancel the reload. Immediately press the reload button again to reload your weapon without the obstructive distance blur.

Melee Fast

After you melee once, press the reload button, as soon as you do that, press melee again. You will have performed two melees with less than a second delay between them. You can continue this cycle for as many quick melees as you wish.

Weapon Move

You can only carry two weapons at a time, but you can relocate a third weapon to a strategic location or next part of a mission.

For example; just prior to negotiating a "fence" point (map feature such as broken stairs, or a ledge) where you will no longer be able to back-track a map to aquire a weapon. Since the game does not give you a checkpoint at these mission locations, is a very final moment in the game, because there is no going back once you drop down.

So here is one way to make that moment much more fun. Note that when you exchange, or pickup a weapon there is a small delay in the weapon exchange. During that brief time you can walk forward quickly and relocate the dropped weapon to where you are now standing. In theory, you "could" drag a third weapon with you through an entire mission .

The fastest way to learn and use this trick is to step back from the third weapon you want to drag with you, hold the "pickup weapon" button down, and then walk over the third weapon while continuing forward in the direction you want to go. The weapon you drop during the exchange will be relocated to a new location (just like the change weapon trick in Halo one).

Where this really comes in handy is when negotiating a fence point in the game. You can actually drag a rocket launcher or other weapon (or multiple weapons for that matter) right up the the edge of the "fence" point, and drop them over into the new area of the mission.

Bunker Blind Spot

In the final mission in the last standoff room, there is a door in between the twin bunkers that will not open. On the left of that door is a lamp. If you stand beside the lamp, you should be covered fairly well by the wall the lamp is hanging from. The guards cannot get to you nor may they shoot you; however, you can shoot back at them.