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