1- Ax: additional 1-10 random damage, 30% chance of killing zombies in one blow.
2- Shotgun: higher damage, lower rate of fire, new sound. Sounds good, feels good.
3- Double-Barreled Shotgun: higher damage, lower rate of fire, new sound. A very close shot can gib zombies.
4- Nailgun: slightly higher damage, higher rate of fire.
5- Super Nailgun: higher speed, higher damage. Can pass through enemies.
6- Grenade Launcher: slower rate of fire. Grenades can be detonated with right mouse button.
7- Rocket Launcher: slower rate of fire, accelerates while flying. Rockets can be loaded and fire together (up to 3 rockets).
8- Lightning Gun: less damage, but consumes half the ammo.
9- Plasma Gun: very powerful. Eats cells quickly. Small chance to appear in the place of the Pentagram of Protection.