I have voted -1 just for now, seeing as there are some serious issues with this guide that need to be addressed before I could feel comfortable upvoting.

First off, summoner spells. Ignite isn't that great for Tryndamere. Sure the extra damage is nice, but getting Exhaust is much better. It should allow you to deal more damage to them while they are slowed then your ignite would have, and can also be used defensively. Ignite falls off around mid-game pretty hard, but exhaust is always a very useful tool. Also, you seem to be waaaaaaaay under-estimating Cleanse. I laughed my *** off when you said you can take it if you're "nitpicky about being CCed". REALLY!? CC is Trynd's worst nightmare in any decent level of play! Since its buff, cleanse is amazing for Tryndamere, seeing as it can remove exhaust and ignite as well as most other CC from your champion.

You didn't list Black Cleaver in your situational items, and the ony item that you get with armor pen or reduction is your Stark's Fervor (and that's minimal). You should have Last Whisper and Black Cleaver somewhere in your alternate items section, or in your primary build (even better). Youmuu's Ghostblade is also a good item for him and is worthy of note.

Brawler's Gloves haven't been a very good first item choice for a long time now. Starting off with boots and 3 HP pots is much more prefferable and makes for a more versatile and safe early game.

There's probably more I could find but this is all I have for now. Other then the fact that you shouldn't end your guide with "I love you". It's creepy.

Regards,
~Trenditon

EDIT: You also may want to include some defensive items in your guide (saw the comment made by CounterSnipe). Some of the best items for him are Wit's End, Quicksilver Sash, and Hexdrinker. Don't ever buy a Banshee's Veil, get a Force of Nature if you need heavy m-resist.

So, if I understand you correctly, a build to counter AP?

I gave it a +1. However, this guide is a little bit on the short side and is very similar to a lot of the other Trynd guides out there. One thing I'd like to see is a defensive item that increases Magic Defense because this build leaves Trynd very open to every AP character on your opponents' team.