I've played around 500 games as Tryndamere, and I am an average player at around 1200 elo. I've played against skilled players climbing their way to the top, and against poor ones falling to the bottom. I've played him in every position and against nearly every champ. Over time, I've been able to identify the central issue that plague's Tryndamere, causing him to be a nightmare to balance, resulting in him being either extremely weak or extremely strong. Surprisingly it doesn't have anything to do with being a melee carry, a significant, although separate problem, which is also addressed in this thread.
His biggest issue is building bonus fury on critical strikes, and I'll explain why.
1. remove the bonus fury on critical strikes and vastly buff his fury generation from all sources.
2. vastly increase his fury decay and decrease the delay before fury begins to decay.
3. make his bloodlust heal scale with percentage health missing rather than fury, still consuming fury.
4. make undying rage last for as long as tryndamere has fury, make him only immune to death from damage dealt by champions and minions, and seriously reduce its cooldown.
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