With such a high TA ratio this achievement looks pretty intimidating, but with a little practice and patience this achievement is very obtainable. As a precursor for this solution I found out after going for this achievement that the track and field mini games are only the individual events and lets you just practice these.
Anyways lets get down to business
This one comes down to your start and finish. If you keep high knees throughout you will finish in the top four. The better your running form is the better you'll do. Luckily this is your first event and if you don't get a boost start you can just restart. To get a boost start you need to start low when and stay low as if you were actually running in the 100m dash. I've also noticed that you can start running before they the gun goes off. I haven't been able to get a boost from doing this but it is close to the same thing. If you false start they just make you start again so it is worth a try. At the end you just need to lean forward like you would at the end of a normal 100m dash. If you lean too soon it slows you down so don't do it to early.
As for both running events. After "Ready" command you will hear 3 loud heartbeats. Start to run 0.5 sec after the 3rd one - that won't be counted as a faltstart and you'll gain a tremendous advantage against the opponents. If you won't screw the running itself afterward you'll easily win both races.
I've finished in 4th through 1st with this method. Anywhere in this area your scores are going to be really close and as long as your close in this event you will do fine. I've found that discuss and long jump have the easiest scores to take advantage of the rest of the competition.
This event is hard to finish first (for me) but I'm always in the top 3. I've looked at many videos and guides for this (trying to get circuit breaker *pulls hair out*) and I've found out that throwing it underhand or how you would normally throw a javelin work decent, the sure fire way to go is to by getting a decent running start and then as if your arm actually was the javelin throw a devastating punch. Your arm should be 45 to 65 degrees because any higher or lower you are taking away from the most powerful angles. Throwing in the 110s to 120 will get you in the top 4 which will keep you in the running.
I've noticed that there isn't just one computer player out to get you like in most other games so even if you finish in the top 3 in each of these events you could find yourself in first place.
This is my favorite event. You use the same running technique as in the sprint and javelin. High controlled knees. This event is all about the timing. You have about 1.5 seconds after the area turns green that you can jump. If you wait until the very end to jump you can easily jump in the 14s. This is where the mini game practice helped me a lot. The windmill technique will also help you out but I found it hard to not do this. I would run, wait til the end, jump do one swing with my arms forward, and land on my butt like they do in the game. You stay in the air longer if you land on your butt and I think this is why it is my favorite because I can be a goon about video games.
This is where I shoot forward in the competition because the other computers are in the 12s at the highest and that gives them 120 points. You scoring 140+ will put you in the lead for sure even if you had mediocre first two event. All you have to do now is hang on.
This event can be tricky to do outstanding in, but even if you do just average you will be in good standings. One thing that throws a lot of people off is their back swings. If you go too far and rotate your body you will accidentally throw it sometimes only going 40 or even 4 meters. If you make a line with your arms 45 and -45 with your arm towards the TV up, this will give you a good idea of where you will be throwing. Your arm should stay along that path while you throw. A controlled arm back and a steady fast arm forward will put in the in 80+ range easily. I've spun after throwing and put a little jump into it too but it doesn't seem to help me any more. The highest that you'll see in this is mid 80s so if you can get a great throw higher than that you'll be in awesome position.
The last event. This is where I started to get worried. No need to panic! There are a lot of areas to cut off time. I found that if you start early like in the sprint event this helps better than the boost. Unlike the long jump you want to jump AS SOON as the hurdle turns green. You don't have to jump high and as soon as you jump if you start running before you land you will keep your speed that you had before. Don't hesitate otherwise they WILL catch you. At the end it is very important to lean to get that boost. And as always high controlled knees is important and a must for speed. If you finish in the top 4 or even 6 with a small lead you can pull out a victory. The hurdles are scored a lot closer than the other events so even if you get beat by what you think is a lot, it is a lot closer than it appears.
I finished with 605 and didn't do that great in any events except for long jump where I jumped 14.27. The javelin I threw 115 and the discuss 84 something. The sprint I got second and the hurdles I got third in. You don't have to be in any sort of real shape for this, but it does help in the sprints and hurdles because you can get tired. I am a runner and have been sprinting for some time and it was still difficult for me to do more than two whole competitions at one time so when you give it a go.. Bring your A game! Good luck to everyone and I hope this helps!