There are a couple things I disagree with in this guide:

First of all, I prefer not to start of with Spinning Slash for the fact that it lower his chance of his crit and his attack damage.

I also disagree with having your summoner spell being exaust seeing as he has Mocking Shout.

As for your items, I like them but I don't think that Boots of Swiftness would be as effective as a second Phantom Dancer.
I'm not going to downvote because I think that this build has potential and can get much better. Keep going!

Wriggles gives you armor/life steal/a free permanent ward/allows you to get dragon at level 7.

Merc treads are situational, as a rule i generally prefer swiftness.

Phantom dancer is only torwards the end of the game, so trynd moves slowly early-on. You need the extra move speed to catch up if you're slowed.

Mercury's treads take off about .2 seconds off most 1.5 second stuns, so it barely makes a difference.

So far you have provided good, reasonable feedback, for which i thank you.
However, after this, you said that i got carried every ranked game.
The games above were mostly normal games, and I played with different people every day (Not randoms, LFG).

Although, i do agree that this guide isn't very in-depth. The items and builds are very detailed, however.

The last part of your reply made no sense at all. 'You've proved it's bad'? That would only make sense if i got carried every single game, which I didn't (Gosh, that would make me lucky as hell, seeing as I haven't lost for a while).

If you want some replays, please PM me as i have all my replays stored for around the past 100 games.

Thank you for the feedback! :)

Well, your item sequence is interesting. Not sure why you would build wriggles first, or why you would get boots of swiftness. With the fact that trynd is so often focused you would think that getting him free via merc treads would be your top priority. He has plenty of move speed as it is as well as the fact that you are saying to build a phantom. Aside from that, if you have played him with thsi build for so long, your scores are terrible.
You honestly got carried most games. Bad build, not in depth at all, and you show that it pretty much doesnt work at all.