New International Track and Field Codes -

Classic mode:
Win a Bronze medal or better in every event in Single Event mode.

Expert mode:
Win a Gold medal in every group in Career mode.

Bonus characters:
Complete the indicated task to unlock the corresponding character.

Evil Rose: Complete Medium Career mode. 
Frogger: Complete Easy Career mode. 
Ming Ming: Link your account at the New International Track And Field community site to your game. 
Pawapuro: Win a Gold medal in all events. 
Pentarou: Complete Hard Career mode. 
Pyramid Head: Win a Bronze medal or better in all events in Single Event mode. 
Referee: Successfully complete Expert mode. 
Simon Belmont: Complete Medium Career mode with all Gold medals. 
Solid Snake: Complete Hard Career mode with all Gold medals. 
Sparkster: Complete Easy Career mode with all Gold medals. 

Bonus points:
Complete the indicated task in the listed event in Career mode to get 1,000 points.

100m Sprint: Win a photo finish. 
110m Hurdles: Finish without hitting any hurdles. 
400m Distance: Reach the maximum setting on the boost gauge before sprinting. 
Archery: Hit inside the yellow bull's-eye zone with at least three arrows. 
Discus: Hit the out-of-bounds target to the left of the throwing area at about the 40m mark. 
Double Trap Shooting: Hit two skeets simultaneously. 
Hammer Throw: Break the camera by throwing the hammer backwards. 
High Dive: Do a belly flop. 
Javelin Throw: Throw the javelin at a 90 degree angle. Note: You will also spear an alien. 
Long Jump: Jump from the very edge of the white line. 
Pole Vault: Vault over 600cm at any bar set distance. 
Skeet Shooting: Shoot the skeets fast enough to see a flying penguin, then shoot it down. 
Springboard: Do a full spin clockwise then anti-clockwise. 
Steeplechase: Jump on top of all barriers. 
Vault: Get a perfect landing. 

Challenges:
Complete the indicated task to unlock the corresponding challenge in Challenge mode.

Frogger's Challenge: Complete Career mode under the Easy difficulty. 
Sparkster's Challenge: Complete Career mode with all Gold medals under the Easy difficulty. 

Community Trophies:
Complete the indicated task to earn the corresponding trophy.

You're The Best: Break a world record. 
Jump The Gun: Participate in the launch weekend events. 
Online Novice: Play for one hour online. 
Online Master: Play for five hours online. 
Online Hero: Play for 24 hours online. 
Best at Javelin: Break the Javelin world record. 
Snake Solid: Break the Snake's Challenge world record. 
Slip-Sliding Away: Break the Pentarou's Challenge world record. 
Master Slayer: Break the Belmont's Challenge world record.