TechLookz

Choose "Password" at the "Options" menu:

Cobra stuff:
SNAKEKING

Grafalloy stuff:
JUSTSHAFTS

MacGregor stuff:
MACTEC

Mizuno stuff:
RIHACHINRZO

Nike stuff:
JUSTDOIT

Oakley stuff:
JANNARD

Precept stuff:
GUYSAREGOOD

Taylormade stuff:
MRADAMS

All Courses:
PROOFTHIS

All Golfers:
GAMEFACE

Bridgestone stuff:
SHOJIRO

Finish the following achievements to get Xbox Live Gamerscore points:

Darkness (20):
Get the ball inches from the hole.

Family (35):
Finish a full 18 Hole round of each Traditional game mode using the same Golfer.

Anchor (10):
Make and Play a 4-player Online Match.

Ace (30):
Do a Hole in One.

Spendthrift (15):
Drop 00 at the Pro Shop.

Bomb! (30):
Play your tee shot more than 350 yards.

Buick Clubhouse (Ambassador)(25):
Defeat Erika Von Severin in Tiger Challenge.

Buick Clubhouse Member (10):
Defeat Danny Wheeler in Tiger Challenge.

Collection (20):
Purchase 25 items at the Pro Shop.

GamerNet 5000 (75):
Acquire 5000 Producer Points on EA SPORTS? GamerNet.

Egg Dance Floor (20):
Putt 75ft or more without using the putt preview line.

Special Delivery (75):
Prevail in the FedExCup.

GamerNet 1000 (35):
Acquire 1000 Producer Points on EA SPORTS? GamerNet.

Gold Card Member (75):
Finish 100% Tiger Challenge Gold.

The Hunt (30):
Get in the top 5 of any offline tournament.

The Zone (50):
Prevail in any offline tournament.

Jungle King (75):
Defeat Tiger in Tiger Challenge.

Mini-Golf (20):
Finish each Mini game using the same Original Golfer.

Old School (20):
Do an entire round offline using the 3-Click feature.

Major General (75):
Prevail in all 4 Majors.

Hot (30):
Complete a round with a score of -10 on TOUR PRO using an Golfer.

Pole Dance (20):
Strike the flag pole.

Scramble (20):
Get in the top 10 of any offline tournament.

Tiger Coin-Op (20):
Finish a full 18 Hole round of each Arcade game mode using the same Golfer.

Las Villegas (20):
Defeat Villegas in Tiger Challenge.

Warrior (30):
Finish 100% Tiger Challenge Bronze.

Female (10):
Make a female golfer using Photo Game Face.

Male (10):
Make a male golfer using Photo Game Face.

Greatness (50):
Finish 100% Tiger Challenge Silver.

Zap (10):
Prevail in each of the Free Style, Long Drive, 9 Hole Showdown, and 18 Hole Showdown channels.

Star (35):
Prevail in a challenge in each of the Free Style, Long Drive, 9 and 18 Hole Showdown channels.

Acquire All Courses:
Go to the designated in-game passwords menu and input PROOFTHIS