Here is my Tryndamere guide Re-made.

For Reds i run Crit damage because as Tryndamere you want to crit your enemy's to death, and to make that easier make those crits hit freakishly hard.

For Yellows i run Dodge, because do you know how scary it would be to be fighting a Tryndamere you cant hit?

For Blues i run more crit damage because basically, nothing else comes to mind when giving Tryndamere Glyphs.. i mean come on he doesn't have mana, he doesn't really need cool down reduction so they are almost useless.

and finally for quint's i once again run Crit damage because as i said before we want those crits to hit as hard as possible