Hello and welcome to my Tryndamere "Let's nerf 'em chumps!" guide!
This build will help you make Tryndamere as overpowered as can be! He has recently been adjusted and became way more naturally overpowered than before, so many guides have been created since it became many people's main. Anywho, my build is hopefully the best one out there (I hope). If you would like to comment or vote, please feel free to, but remember to keep it clean!

I chose the skill sequence above because Tryndamere needs to sustain his health as much as possible so he doesn't have to go back to "base" a lot and waste time which could be spent in leveling! This is why I chose Bloodlust as top priority because it heals at no cost. Also, Tryndamere needs a few slows so he can catch his enemy before it escapes and get on the killing spree, so Mocking Shout is my second priority since it slows the enemy down and even decreases his/her attack by a decent amount. Finally, Spinning Slash comes in mind so escape can be an option without having to deal with massive gankers, but leveling it more than level 1 would not be very important since level 1 just does the job.

I chose full "Crit" runes so Tryndamere can be very overpowered early game and is ready to kick some butt!
Not much to say since the above statement says it all. xD