As the description states, 'EVERY' attempt must qualify.
1. 100m under 16.00 seconds
2. Long Jump over 6.00m on all 3 attempts
3. Javelin over 65.00m on all 3 attempts
4. 110m Hurdles under 14.50 seconds
5. Hammer over 73.00m on all 3 attempts
6. High Jump clear 2.15m, then 2.25m then 2.30m without failing once.
You must not foul on events 2, 3 or 5 either.
Do not jump the gun starting events 1 or 4.
The achievement will unlock once you've failed the high jump 3 times, been through the "congratulations" screen and returned to the first event on round 2. (Thanks, Jayour)Oddworld X
reports that it didn't pop for him whilst playing multiplayer so it would be safer to only go for it on a single player game.