This is a guide to how I usually play Tryndamere, at first its hard but when you get your items it takes 3 maybe more champions to take you out!

As Tryndamere crit plays a big part in killing champs so you need a lot of it and it also helps to have armour penetration for the tanks.

These masteries will help your crit and your attack speed which is a help for trynd as he only uses physical attacks and attack damage is a big thing if you actually want to kill champs.

For this build there is a lot of Lifesteal hence the name, but you need some attack speed and crit chance but the avarice blade will get some extra money for you and also builds the youmuus ghostblade and the bilgewater cutlass builds the hextech gunblade but you build these two after everthing else is bought.

This is the best way to get the skills but if you need to make minor agustments depending on situation like for example champs who have a lot of armour you may need to get mocking shout quickly to get rid of them or if champs are dealing to much damage get spinning slash quicker to get away more.

Use exhuast and ghost because enemy champs can get away even after mocking shout so exhuast lets you catch up and if need be ghost too but ghost is a good way to get back to the fight if you recalled or died.

Overall it is a usefull build if you dont want to die and want a few kills. I hope this helps.