There are about 20 different weapons in the video game Killzone 2. These weapons include sidearms, semi-automatics, fully automatics, explosives and special weaponry. Each weapon has a different combination of damage, rate of fire and accuracy. They each have different load times and magazine capacities as well.
Killzone 2 Weapons
Sidearms
M4 Revolver: High damage, but low rate of attack and accuracy
STA18 Pistol: Better accuracy and rate of attack, but half as much damage as the M4
M32 Combat Knife: High damage, but rate of attack is low
Semi-Automatics
STA14 Rifle: High damage and accuracy, low rate of attack
LS13 Shotgun: High damage, low accuracy and rate of attack
Fully-Automatics
M82 Assault Rifle: Good rate of attack and damage, and even better accuracy
STA52 Assault Rifle: Better rate of attack than the M82, but less accurate
STA11 Sub-Machine Gun: Same as the STA52, but faster reload time
STA3 Light Machine gun: slow reload time, but faster rate of attack
M224-A1 Light Machine Gun: High damage, average accuracy and rate of attack
Explosives
M194 Frag Grenade: High damage, low rate of attack
Proximity Mines: High damage and accuracy (multiplayer only)
M327 Grenade Launcher: Average accuracy and damage with lower rate of attack
VC9 Missle Launcher: Max damage and accuracy, but lowest rate of attack
M80 Rocket Launcher: Same stats as the VC9 (multiplayer only)
Specialty Weapons
VC32 Sniper Rifle: Slow, but very higher damage and accuracy
VC1 Flamethrower: Average rate of attack and damage, but low accuracy
VC21 Boltgun: High damage, good accuracy, low rate of attack
TR-X Teslite Grenade: Like a frag grenade, but lower damage and doesn't hurt buildings
VC5 Electricity Gun: Low accuracy and rate of attack, but good damage and infinite ammo capacity