Secret Cave

There is in level 5 a secret cave at the button of the map entrance. It comes out on the side where they are not expecting a side attack from that side and it shall be easier.

Get New Ending Sequence

Finish the game using legendary difficulty setting in Campaign Mode

Bloody Warthog

To start things off lets just beat the game first!Now since the game is beat you should have a little fun.Now go to any level that lets you use the warthog.Now for the good part.When you see an enemy run over him.But it isn't that simple!If your enemy jumps out of the way do a donut and you should get him!Another cool thing is to take a rocket launcher and blast the warthog towards them and it might hit them and they will die!Now I have a great recipe for chicken noodle sallad,just kidding!

Silent Level Shortcut

This will help if your annoyed by always having to go back because the yellow dude locks the door. First find a warthhog and get some people inside. Go where the place where there are lots of guys and where kortana says the covenant are putting up a real fight. Go down completely with your warthhog and go at full speed directly where the yellow dude is. If you did it right then your warthhog will be half way through. Press forward and get out. Then pass the level like you usually do and come back where the warthog is stuck. You may think it is impossible to get out but just press back and then get out. You will be in back of it and now you're done the hard part!

Easy way to kill an Elite

Its simple, if you have a plasma pistol charge it up and fire it at an elite (if it tries to dodge it, the shot will follow it) and that should take out its shield, then pull out any other weapon (assault rifle works best) and waste em!

Good tactic for legendary

Here's a good way of killing elites or hunters in legendary. get a needler and some ammo and just unload it on an elite and watch the show. You have to get in close enough for the needles to find their mark, and the delay until they explode leaves you wide open for their plasma rifle, so bring a backup weapon.

For the hunters, unload an entire clip at their backs so the shot doesn't reflect off their shield and start shooting at them with another weapon while waiting for the needles to explode (or just sneak up on one and smack him in the back, and if you cant to that...a well placed plasma grenade to the head should weaken it.

Having Some fun With Hunters

Its like playing with a bull (a bull with a fuel-rod gun and a bad attitude) with a red flag. Wait for it to melee you and right before it hits you move out of the way and hit it in the back. Then jump out of the way so it doesnt kill you. This trick is very hard to do however, try and get behind one hunter so the other one shoots at you and hits the other one in the side...or head..or wherever it might hit it. i did this once and it killed the hunter.

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