Kill 5 Helghast in 15 seconds whilst on foot and maintaining at least 85% health

Finish the game in Normal Mode

Kill 50 enemies with the SAS - 12

Kill three enemies with one explosion five times

Kill three enemies with one explosion

Kill 50 enemies with the M4

Kill 30 enemies with the Dragon Sniper

Kill 30 enemies with the MP40

Kill 30 enemies with the M79

Find 45 treasures

Find 35 treasures

Kill 50 enemies with the Micro - 9mm