Kill 10 enemies with one shot on difficulty Easy or higher

Kill 10 enemies with one shot on difficulty Normal or higher

Kill 10 enemies with one shot on difficulty Hard or higher

Kill 10 enemies with one shot on difficulty Insane

Kill 10 enemies within 10 seconds on difficulty Easy or higher

Kill 10 enemies within 10 seconds on difficulty Normal or higher

Kill 10 enemies within 10 seconds on difficulty Hard or higher

Kill 10 enemies within 10 seconds on difficulty Insane

Kill 20 enemies with one shot on difficulty Easy or higher

Kill 20 enemies with one shot on difficulty Normal or higher

Kill 20 enemies with one shot on difficulty Hard or higher

Kill 20 enemies with one shot on difficulty Insane

Kill 20 enemies within 15 seconds on difficulty Easy or higher

Kill 20 enemies within 15 seconds on difficulty Normal or higher

Kill 20 enemies within 15 seconds on difficulty Hard or higher

Kill 20 enemies within 15 seconds on difficulty Insane

Kill 30 enemies within 20 seconds on difficulty Easy or higher

Kill 30 enemies within 20 seconds on difficulty Normal or higher

Kill 30 enemies within 20 seconds on difficulty Hard or higher

Kill 30 enemies within 20 seconds on difficulty Insane

Kill 5 enemies with one shot on difficulty Easy or higher

Kill 5 enemies with one shot on difficulty Normal or higher

Kill 5 enemies with one shot on difficulty Hard or higher

Kill 5 enemies with one shot on difficulty Insane