Kill as long as possible and eventually blowtorches will spawn. As long as one player still has the pistol, most kills should spawn weapons, as long as there are not any on screen. Use the Fire Cough perk to dispose of monsters easily without using big guns, which can destroy the nest. Go on a killing spree at regular intervals, and do not die. Have the second player join and survive until there is only one nest remaining. Start a Quest mode map with monster nests (spawns). Play in Survival mode and go on a killing spree. For both, start a co-op game (recommended), solo if desired. There are two ways to collect 50 Blowtorches. Barrel Greaser and Fastshot will make the shots go faster, but not more frequently.
Note: Remain still if you have Stationary Reloader and the shots will fire faster. Seven-way constant shots should start shooting from your weapon. Get the following perks: Angry Reloader, Fastloader, and Stationary Reloader. Acquire the Pulse Gun (that shoots little green waves). This trick allows you to use a "Seven-way Plasma Gun" and is useful in Survival mode. This will happen whenever you have the pistol and there are no other weapons on screen. If you do not like that weapon, just wait for it to disappear, and kill another creature for a different weapon to appear. In survival mode, the first or second creature you kill will always have a new weapon power-up. Click on the snow or message to return to normal. When the game starts, a "Happy Holiday" message will appear with snow. Click it to play the Alien Zoo Keeper mini-game. Once again, click the lines that have the letter "O". When the name list ends, wait and another list will begin. You will hear a sound with each correct click. Watch the credits, and click all lines that have the letter "O". Successfully complete the game on the Normal difficulty to unlock Typ 'o' Shooter mode and the Hardcore difficulty. Note: This only works in earlier versions of the game. Allow the other creatures to almost kill you to get the Rainbow gun. Walk directly to its body, and wait at that location. Have your first shot kill a creature with one hit. Start a game, and do not shoot for approximately two minutes while not getting damaged by the aliens to get the Bubble gun. Press Y(3), X(3), Y to unlock the Puzzle mini-game. At the "Extras" menu, select the "Credits" option, then scroll to the bottom of the screen to see something is hidden.