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