Here is the full list of all 40 Midnight Fight Express achievements.
Slice 75 enemies.
Kill 4000 enemies.
Shoot 500 enemies.
Collect 150 golden teeth.
Get an S-Rating on 20 levels.
Kill 50 enemies using gun finishers.
Kill 75 enemies using explosives.
Throw 250 environmental items at enemies.
Kill 250 enemies using melee finishers.
Complete your first 25 challenges.
Damage 100 enemies using rope.
Kill 2000 enemies.
Stick 50 sharp weapons into the heads of enemies.
Kill 50 enemies using ground finishers.
Get 100x combo on foot.
Finish the game.
Electrocute 100 enemies.
Kill 50 enemies using wall finishers.
Complete the Alleyway mission.
Blow up 50 enemy heads with secondary gun.
Parry 150 attacks.
Complete the Highway mission.
Defeat 15 enemies with different types of kills on a single level.
Kill 6 enemies while in Rage.
Complete the Wavechase mission.
Kill 500 enemies.
Spend 50000$ on clothes.
Mute the music.
Complete a level without getting hit.
Complete the Factory mission.
Kill 500 dummies in the Playground.
Die 500 times.
Get an S-Rating on all levels.
Complete all challenges.
Kill 150 enemies using weapon finishers.
Escape from grapples 50 times.
Talk with all special characters.
Complete all levels on hard difficulty.
Complete all levels on realistic difficulty.
Let 100 enemies kill each other.