This guide is my first build testing. I know it's strange playing style, but i get it worked if your team's tanky-champion is not strength enough.

This style make your Trundle can solo-ambush the tower and tanker for your AD carry by non minions in lane.
OK! it's look like a coward-player in your enemy team's eyes, but in my testing play it help my team advantage the enemy team in tower offending, gold-farming, and lane controlling.
Nevertheless it will make your team can be a winner in disadvantage game.

Pros.
- Strong early game
- You can ambush the tower by solo in 15 or 20 minutes.
- Strong with a lot of health and armor
- Sustain in lane playing
- Good ganker in late game

Cons.
- Weak when you be attacked by AP enemy
- Hard chaser
- Items dependents
- Hard to hunt in early game
- Need a lot of endurance for play in early game
- Not much damage in early game

Well the summoner spell is non-permanent but it can change by up to a player style.

Ignite
Exhaust
Smite
Heal
Ghost
Teleport




If you want to finish the enemy in early game, you can take;
Ignite
Exhaust

But if you want to be survivor, you can take;
Heal
Ghost
they can be help you

For my testing game I take Teleport and Ghost for make chance because it helpyou to move faster with Frozen Kingdom

It hard to finish you enemy in early game and you can be stressed by your AD range enemy, so you must HUG your tower in early game and kill more minions for your golds and levels. You must have first 3 skills to help you to play easier. By the way you can have a chance to finish you enemy if him/her walk in your tower attack range. This style is "items dependents", so you must get more gold to purchase main items as fast as you can. In the early game you will feel like you are not strong enough or deal not much damage to beat the enemy with your self, but if you have more endurance you will find the way. Yes! the key to take enemy more damage is "Critical Strike" and in the late game your trundle will have high rate of critical chance and high percentage of critical damage.

First I star with my second type; take 3 or 5 of HEALTH POTIONand 2 REJUVENATION BEAD. I keep HUG the tower for save my life and level up to 3 or more, get least 3 skills or better 4 skills.

Next support your partner to make a chance to kill and finish the enemy. purchases the WARMOG'S ARMORfirst and then I take 2 of ZEAL. Wow! I have a lot of health, attack speed and movement speed to ambush the tower with Frozen Kingdomskill. Now I have 3 of base items they are WARMOG'S ARMOR and 2 ZEAL.

Next I destroy the enemy tower in my lane and go gank in other lane for beat the enemy, because now my trundle is strong enough to be a sub-tanker. At this time if I feel like my Trundle not strong enough, I purchases CHAIN VESTor/and VAMPIRIC, or if I feel like my Trundle deal not much damage, I purchases B.F. SWORD. Then I finish purchases INFINITY EDGES. So I gets all main item to be a tower destroyer and get more damage to beat enemy in gank play. Now I have WARMOG'S ARMOR, 2 ZEAL, CHAIN VEST, VAMPIRIC and INFINITY EDGES.

Next go gank with my team and destroy more Tower or beat the game. In this time if you have many of golds, try to purchases SUNFIRE CAPEor GUARDIAN ANGEL, STATIKK SHIV, HYDRA RAVENOUSand TRINITY FORCES.

Finish Purchases order in this game is
WARMOG'S ARMOR, INFINITY EDGES, SUNFIRE CAPE, STATIKK SHIV, HYDRA RAVENOUS and TRINITY FORCES.

At this time you are the tanker and/or 2nd tanker. Get closer the enemy team and use Frozen Kingdom to run into enemy AD carries or enemy AP. Use Pillar of ice to stick enemy AD or AP and split out them from enemy tanker. Use Subjugate first to extents your life and spam a Chomp to help your team get rid of enemy AD or AP as fast as you can then King's tribute will extents your life to stand tank again. At this time if you get no kills or if you die it will be OK because of you are tanker and not AD or AP carries.
But if you are the only one survivor you can ambush the tower with yourself if your health is much more enough.

This Trundle guide is one of a way to play with a safer life and ensure your team has a "Tower pusher" to win the game. OK! sometime it look like a coward and to bore in early game but I thinks it's fun to play in middle and late game after you finish the critical damage items. But if you don't like this way, I think you can try for other Trundle guide and find you own playing style. :)

(Remark - You can comment the negative opinions if you have, but please polite and don't be rude)