Exterminate 3 hordes.
Finish all the missions in the game.
Win the golden glove on one mission.
Get the gold in every mission.
Achieve a 10,000 point combo.
Launch the 4 special skills specific to one character in a single mission.
Kill 500 monsters with the chainsaw.
Kill 300 monsters with fire.
Heal a character on the ground 10 times in multiplayer mode.
Complete an online multiplayer game.
Complete a mission in 2 player local game mode.
Achieve a 50,000 point combo.
Kill 1,000 monsters.
Score 300,000 points in a single game.
Complete all the missions in the game in "Rock hard" mode.
Find all weapons with the same character.
