nearly every weapon is useful on the flood, and some are even better, but the one weapopn
you do not want to use on them is the sniper rifle, it just goes through them!  the
weapons I suggest you use is the assault rifle, the shot gun, and the pistol, i say this
because the ammo for each is dropped constuntly when the flood attack especialy on
legendary.

in devmode( there a program for multiplayer dev mode made by bitterbannana) go to blue
base and press~ then type"cheat_all_vehicles" about 5 times, evry one in blue base will
die and when u look around the hole base will be coverd in gun turnets and scorpians=P

at the level "halo" there will be a sniper rifle in two of pods.complete the mission
without using it a.k.a the sniper rifle. in truth and reconciliation, u will have about 44
sniper bullets.have fun going crazy. I recommend  saving sniper bullets for elites and
grunts in turrets

ON CILENT CORTOGRAPHER AFTER CLOKING THE GAME ON LEGENDERY GET TO THE PART WER YOU SEE
HUNTERS THE FIRST TIME (MACK SHOR THAT ALL MORENS ARE THER AND DONT BRING THE WORT HOG) DO
OT KILL THEM!!!! LEED THEM TO THE MORENS AFTER THEY DIE KILL  THE HUNTERS AND THE DO THE
LEVEL AS NORMIL UNTILL YOU GET TO THE CUT SEEN AT THE CLIFF AND CORTANA WILL BE
MARSAPATING!!!