You can not glitch to rank 50. You have to play ranked match's until you reach that rank.
There is no glitch.
yes
No such thing they patched in since halo 2
No, there is not.
U can't! :(
Nope. Sorry.
your question makes no sense. restate it.
no no NO!!! earn them yourself, lazy
You can't. There is no glitch for unlimited life.
You sign in a guest then do the human turret glitch
There are no glitches, cheats or workarounds to earn all the achievements in Halo 3 illegitimately.
Halo 3 has several glitches. Go on YouTube and search for CMNeir's channel. He run a show called Halo 3 Tricks, so you'll find all the glitches there.