Total cost to unlock all the weapons is $55,6800. Save $250,000 for the Hairdryer early because it makes farming money easier. Play solo under the Inferno difficulty setting on the "Bullpen" map. The Inferno difficulty awards at least 65,600 points with more if you complete challenges (melee kills, not getting downed in the entire round, headshots, not using killstreak in a round, etc.) The "Bullpen" map features a room on the ground floor with ammunition and only two doors where enemies can enter. This will help protect you from snipers. Have Adrenaline to build your killstreak faster than usual. Use the last killstreak; spikes that rise from ground. After each use you will reach the third or fourth killstreak again. Use the Hairdryer weapon because of its high rate of fire, accuracy, and 100 round sized clip.
Complete the following tasks to unlock PlayStation 3 trophy rewards.
Complete the following tasks to unlock PlayStation trophy rewards.