To be honest, Tryndamere is fairly balanced man. Consider the following if you're playing against him:
- He's not the greatest at team fights and is usually just a straight up split pusher. So his play pattern is predictable.
- His ult is also predictable, can be baited and is easily countered to secure a kill with
or combined with
if you're AP.
- Hard CC counters him well and if used correctly, usually results in killing him.
- You can decrease his overall crit damage with
and kite him for days with it's active.
- You can usually poke him to hell if you're a ranged Champion pre 6.
- if he engages on you, it's usually a kill in your favor if you play it right pre 6 as long as you're not really squishy or dangerously low on health.
Post 6, you can always freeze lane under your tower and request jungler assistance. There really isn't much he can do unless you get wreckless, take too much poke with lost trades and/or stay under your tower with ~35% health. That's just asking to be dived by him.
Hope this helps you playing against him or gives you a general idea of how to handle him. Good luck in your future games!