Get all other trophies
Complete level 7.
Kill 750 enemies.
Complete level 6.
Complete level 5.
Kill 500 enemies.
Preform an UltraViolence kill combo.
Complete level 4.
Buy any cat upgrade.
Kill 250 enemies.
Complete level 3.
Kill 100 enemies.
Complete level 2.
Preform a Brutal kill combos.
Kill 50 enemies.
Preform a Deadly kill combo.
Kill 25 enemies.
Complete level 1.
Preform a Cruel kill combo.