Dance Central

Play through each of the following songs on Break it Down Hard (can be done on any mode but break it down gives you more chances to pass the move if you make a mistake) and make sure you pass the required moves. You only need to pass each move one time (get one green check). If you fail a required move, quick use your left hand to slow it down, perform it once and speed it up again. You will get 3 more chances to pass the move. The achievement will pop at the stats screen at the end of the song.

Drop It Like It's Hot (Barbell)
C'mon N' Ride It(Boxer)
Days Go By (Defense)
Days Go By (Goal)
Crank That (Jock)
Jungle Boogie (Quarterback)
Pon De Replay (Run)

There are several move-specific achievements, and if you're looking for a guide to tell you which songs you need to play to get them in the least amount of songs, then that's what this is for.
To unlock the songs you will need, you will have already passed a few of the following moves, but assuming you may have missed them by chance, they are all here.

The best way to do this is to play Break It Down Mode on hard. Wait for the move you want, and try to get just ONE green check mark (or diamond if you're good) and it will count towards the achievement.
Note: you do not have to pass the break it down mode, nor the move overall. One green check mark or better, and you have it.
Be careful, not to mess the move up three times in a row, or else it will move on to the next dance move. If you need more attempts, slow it down, and speed it up again. It will give you three more attempts.
Also, if you want your work to count, you must finish Break It Down mode, and not quit out early. It doesn't matter how poorly you do.

If you want this specific achievement, then ChrisTheMeat has a wonderful guide, and it would be pointless for me to copy what he's already put down... right?

Without further adieu...

Flava In Ya Ear (Pharoh, Scuff & Stomp, Cool Kid, Sing Out, Elephant, Slam Out, Earache, Palpitation, Moonshine)

Days Go By (Bungaloo, Robo Locking, Brooklyn, Defense, Goal)

Bust A Move (Snake, Cabbage Patch, Nerd It Out, The Bird, Tiger Palm)

Rump Shaker (Arm Twist, Funky Charleston, Hoodie, Booty Down)

Just Dance (Wind It Up, Latina, Club Monster, Pose)

Crank That (Jock, Lean & Rock, Punchout)

Down (Pop Down, Knockout, Step Side)

Jungle Boogie (Raise the Roof, Bug Juice, Quarterback)

Pon De Replay (Moonrise, Keyboard Cat, Run)

Can't Get You Out Of My Head (Love Warrior, Calypso, Booty Bank)

Hella Good (Elbow Throw, Guitar, Rock Out)

Maneater (Boy Band, Predator, Prey)

Funky Town (Disco, Fever)

Satisfaction (Electric, Glitch)

C'mon N' Ride It (Pony, Boxer)

Push It (& I Feel About, Tantrum)

Move Ya Body (Ride, Patty Cake)

Rendez-Vu (Puppet Drop, Double Rainbow)

Poison (Snare, Boardbreaker)

I Know You Want Me (Salsa, Merengue)

Pump Up The Jam (Booty Bump, Snap Groove)

Hey Miami (Step Center, Tap Front)

Brick House (Rump Roast)

Poker Face (Down Under)

Drop It Like It's Hot (Barbell)

King of the Dance Hall (Chicken Wing)


Sorry for the length, and good luck!

Break it Down:
It's enough to get 1 green check mark for the move to pass.
"Drop It Like It's Hot" on Medium (Move - Barbell)
"C'mon N' Ride It" on Medium (Move - Boxer)
"Days Go By" on Medium (Moves - Defense, Goal)
Crank That" on Medium (Move - Jock)
"Jungle Boogie" on Medium (Move - Quarterback)
"Pon De Replay" on Medium (Move - Run)