Below are the Level cheats for your reference.
Level 1: Payback
Level 2: Goblin Forest
Level 3: Goblin Outpost
Level 4: Rocky Fort
Level 5: Goblin Gauntlet
Level 6: Cannonball Run
Level 7: Two Smoking barrels
Level 8: Gold Rush
Level 9: Maginot Line
Level 10: Rat Valley
Level 11: Brute Force
Level 12: Gobbotown
Level 13: M Is For Mortar
Level 14: Megablaster
Level 15: Immovable Object
Level 16: Fort Knobs
Level 17: Watchtower
Level 18: Fools Gold
Level 19: Thoroughfare
Level 20: Bouncy castle
Level 21: Fikova
Level 22: Gobbo Campus
Level 23: Danny Boy
Level 24: Ommahha Beech
Level 25: Walls Of Steel
Level 26: Sicilian Defense
Level 27: Obsidian Tower
Level 28: Arrow Head
Level 28 Bonus: Killer Cannon
Level 29: Red Carpet
Level 30: Natural defense
Level 31: Steel Guantlet
Level 32: Queens Gambit
Level 33: Full Frontal
Level 34: Chimp In Armor
Level 35: Faulty Towers
Level 36: Point Man
Level 37: Triple A
Level 38: Goblin Picnic
Level 39: Bait ‘n Switch
Level 40: Collateral Damage
Level 41: Choose wisely
Level 42: Mega Evil
Level 43: Crystal Crust
Level 44: Cold As Ice
Level 45: Jump Around
Level 46: Kitchen Sink
Level 47: Rolling terror
Level 48: Megamansion
Level 49: PEKKA’s Playhouse
Level 50: Sherbet Towers
Level 51: Sherbet Towers (No PEKKA)
Read more at http://gamewise.co/games/46190/Clash-of-Clans/Walkthrough/Getting-Started#bsQTcyJaQ4Zx7Hf8.99