Yes, but in the next Halo the Covanant tries once more to get The Ark of the Covanant in Halo 4: The Beggining of the End
halo combat evolved: m6d pistol , ma5b assault rifle , m9 he-dp grenade , m90 shotgun , s2 am sniper rifle , m19 ssm rocket launcher, m41 laag , plasma rifle , plasma pistol , needler , plasma grenade. halo 2: smg , battle rifle , particle beam rifle , brute shot , carbine , energy sword , machine gun turret , magnum , needler , plasma rifle , rocket launcher , shot gun , sniper rifle. halo 3: assault rifle , battle rifle , beam rifle , brute shot , carbine , energy sword , flamethrower , fuel rod gun , gravity hammer , machine gun turret , magnum , mauler , missile pod , needler , plasma pistol , plasma rifle , plasma turret , rocket launcher , sentinel beam , shotgun , SMG , sniper rifle , spartan laser , spiker. halo reach: assault rifle , DMR , grenade launcher , magnum , rocket launcher , shotgun , sniper rifle , spartan laser , concussion rifle , fuel rod gun , focus rifle , needler , needle rifle , plasma launcher , plasma pistol , plasma repeater , plasma rifle , energy sword , gravity hammer , plasma cannon , machine gun.
In halo reach there is some small moderations. The Rifle is slighty more accurate and has a new visual upgrade. But the assault rifle in Halo 3 is much better becuase it has more ammo (the rifle in reach only has 32 and the rifle in halo 3 has 60) and is the original version.
Halo 2 has the gravity rifle in it but i (think) you have to have the custom edition to get the gravity rifle.....
Plasma Pistol, as it is in about all Halo games.
yes there is a fake plasma pistol and assult rifle and even a life size energy sword. i dont know where to get them though
You don't. Halo 3 doesn't have Focus Rifles, they are only in Halo: Reach.
yes they do
plasma
The 3 round burst gun from halo3.
Yes
practice!