Halo: Combat Evolved
PC

Alternate Ending:


To get a different, longer ending movie, beat the game on "Legendary."
Good Pincushions:


When in possession of the alien Needler, you can do some devastating damage.    To maximize its effectiveness you should be a stone's throw away from your target.    Make sure as many needles hit your assailant as possible. Since they explode    shortly after impact, you can cause an awesome chain reaction that is quite    explosive to the now charred enemy and anything else in close proximity to your    victim.
Left Wide Open:


If you're looking to knock out the round shield wielded by the mid-sized aliens,    grab one of their weapons and hold the fire button down for a shot to charge.    Now let it rip! It will permanently disable the shield, leaving him wide open.
Toro! Toro!:


Don't back down from those huge mortar toting Hunters. If you can get a Hunter    to swing his shield at you, strafe around to get behind him, and shoot him ONCE    in that squishy orange stuff in his back. If you hit him right, 1 shot will    kill him. Easy stuff.
Pistol-Whip It Good:


Never underestimate the power of a well-placed melee attack. Smacking someone    or something with the butt of your gun is great fun and immensely effective.    Enemies resistant to gunfire like the shield-wielding Jackals are usually killed    instantly when struck with the butt of your gun.
Board Them:


In the very beginning of the game when you are trying to escape the Pillar of    Autumn, you can find cloak devices and Overshields (shields that double over    your existing shield). When you locate the area where the escape pods are, you    should find a couple Covenant boarding pods. This is how they have boarded your    ship through your empty escape pod airlocks. Within their boarding pods you    should find a few handy items.
Flash Flood:


When you encounter the Flood, turn your flashlight on and point it at them.    The large one will stop running and jumping so that they are easier to shoot.    But, if you raise your gun to reload, turn away from them or take the light    off of them in any way, they will resume running around and try to kill you    again. Although the creatures infected by the Flood stand still when you point    the flashlight at them, they may still shoot if they have a gun, so kill them    quickly.
Best Anti-Flood Weapon: 


The combat shotgun is the best weapon when you fight the Flood. It will take    them down in 1 or 2 shots.
Overshields Over There:


In the level "The Silent Cartographer" where you disable the security    systems, there are three overshields near a couple of those purple barrel things.    When you're about to enter the first hallway into the security disabling room,    before you even go in the structure, turn left and they should be lying about.
Banshees & Shortcuts:


In the level where you charge the control room, the snow one, you can hi-jack    an enemy banshee. When you're in the corridor and it says "If I had a Super    Weapon" in the bottom right hand side, you can snipe down the Covenant    that will get into the banshee. If you do snipe him down, make a break for the    Banshee and hop in. Even if you don't get it, you can still skip half the level    by turning left as soon as you come out of the door and falling off the bridge.    The wall will break your fall, so you don't get hurt, from there you can head    up to the control room and beat the level in no time.
Get the Drop on the Dropship:


When a drop ship unloads aliens, the next drop ship will hover in the air. If    you take your sniper rifle and zoom in on the sides where the doors open, the    targeting cursor will turn red. Fire once or twice and the alien will plummet    to the ground.
You're In My Seat:


When one of your computer controlled buddies is in a vehicle spot/seat you want,    simply go over to that spot and get in like you normally would. They will graciously    move.
Quick! Duck!: 


Ghosts can crush you, but if you press your duck button when they come at you    they will go right over your head.
When Warthogs Fly!:


Park a warthog in any open space near a cache of grenades. Stand way back and    shoot the explosives with anythng to detonate them and enjoy. Note: To see a    master at work, go to the GR goodies    section and check out Warthog Jump: A Halo Physics Experiment.
Where Do You Think You're Going:


Put a vehicle over a teleporter receiver. This is especially useful in Capture    the Flag mode.
Eternal Slumber:


If you walk into a room and you notice that the Aliens are sleeping, do not    shoot at them! Instead go into 'sneak mode.' In this mode, pistol whipping a    sleeping enemy will kill them instantly without waking their friends.
Get a Banshee Early:


In the Assault on the Control Room level, get a rocket launcher and a sniper    rifle from the area near the flipped Warthog where your men are fighting. Once    you get to the Scorpion Tank, take it through the cave. After the cave there    will be a small hill. Destroy the Wraith Tank from the top of the hill, and    destroy any enemies you can without leaving the hill. Next, get out of the tank    and turn around to your right. From here, if you look up you should see a platform    with a blinking light. Also: if you pass the little pond where the wraith tank    was, an elite guard will jump in your Banshee and it'll be lost. If you get    on top of the platform, use a sniper rifle to aim directely at the Banshee through    the hanger. Take a rocket launcher without moving the controls and shoot the    rocket, which should flip the Banshee. When you know it's flipped, run to it.    Now go to the hangar, kill the elite, and claim your Banshee!






Thanks to Revolution reader Iloveyoumasterchief!     








These codes can only work in devmode of Halo: combat evolved and does not work during online play.




    
    

        

            
Code
            
Effect
        
    
    

        

            
cheat_medusa 1
            
Instant death for enemies that see player
        
        

            
cheat_deathless_player 1
            
Invincibility
        
        

            
cheat_bump_possession 1
            
Possess touched character ¿?
        
        

            
cheat_all_powerups
            
Spawn all powerups
        
        

            
cheat_all_vehicles
            
Spawn all vehicles
        
        

            
cheat_all_weapons
            
Spawn all weapons
        
        

            
cheat_super_jump 1
            
Super Jump!!!!!!!!
        
        

            
cheat_bottomless_clip 1
            
Unlimited ammo, no reload
        
    

 



Camera Control Mode
ATTENTION: This is for Halo: custom edition Devmode only. To activate Devmode, open the properties window of the halo custom edition shortcut. in the target line add -console -devmode (include the spaces before the -'s), then start a game. while in gameplay, press the ~ key (the one directly above tab), type the commands exactly as shown, including the _'s then press enter after each command. This will seperate the camera from the player and make it controllable. Hold the mouse scroll button down to control the camera
w- forward


s- back


a-strafe left


d- strafe right 


r- move up


f- move down


mouse- look/turn


scrollwheel up/down- adjust camera movement speed