Halo cheats for the PC

Fireworks

If you have just won a game or would like to celebrate, take two plasma grenades and throw them on the same exact spot. The first grenade will explode, sending the second grenade into the air. After about one to two seconds, the grenade will explode blue.

rating: 85%

This is the highest rated Halo cheat for the PC on the site

Defeating Covenants

When Covenant dropship is getting ready to unload a group of Covenants, throw a grenade into the door as it opens. The blast will kill several of the enemies since they are all in one area. There are places (especially in the first level) where a groups of Covenants are, waiting for you to barge in and start shooting. If you can, sneak to the aliens and throw a grenade into their midst. It is best when a plasma grenade sticks to a Grunt, because he will run behind the rest of his companions. One simple grenade can take out five Covenants.

rating: 84%

Double jump

After you jump, do a crouch. You will stay in the air longer and go slightly higher. This is useful for reaching ledges that you can just barely reach with a normal jump.

rating: 83%

Stronger melee attacks

Jump in the air and your melee attacks will be stronger while you are falling.

rating: 83%

Quick kill in multi-player mode

When you are facing a partner in multi-player and you cannot find ammunition, sneak up behind him and hit him in the back for an instant kill.

rating: 80%

Defeating Jackals

Use a photon weapon to destroy a Jackal's shield quickly. When you encounter a Jackal, run up and hit it with your weapon or get out a gun that uses bullets, not energy. When you are a far way away from Jackals and have a sniper, they will sit in the defense position and leave very little uncovered. You will notice that on the right or left is a small notch in the shield. Aim for it and the Jackal population will be severely decreased.

rating: 78%