Well I was looking around in Cheat engine lately and I found some crap. I figured I haven't done anything with them yet, and probably won't, for a while, thus, you might make use of some of these addys.

Code:
 Dev Boolean-

  006BD096

01/00 00 60 C8 14 00 02 00 00 00 40 B8 16 00 00 00

Console boolean-

     00651E89
    
01/00 00 00 01 00 00 60 10 00 00 0D FF FF 00 00 00
I was toying with the idea of making those booleans accessible via scripts in Open Sauce

The following I was planning on releasing in Open Sauce (and still am) however I need to find the addy in dedi still.

This was an Idea I had for modifying the jump height/velocity of the player. It turns out that Cheat_Super_Jump multiplies the default velocity (in stock maps, 1.7 mps) by 4.

I forget how jump velocity works in tandem with jump height in the game but hey.

Code:
SJ Bool-
         00815CA4
     

SJ Modifier
     00612388
 -set to 4 by default. Fun to use on Hugeass or Coldsnap.
  
Timberland as well. :P
Another note, that Super jump MUST be enabled in order for this method of modifying jump height to work.

I'm going to use this as a log to the interesting values that I find in Halo.

Currently on my list to be found are: Maximum Health, Max shields, and Grenades.

With those I expect to find the actual health, shields, and 'nades the player is holding. If you have ideas feel free to let meh know.