Pros and Cons

Pros
+ One of the best endgame dps champions
+ Great healing ability (Bloodlust)
+ Great escape/tanking ability (Ultimate)
+ Can go through walls (Spinning Slash)
+ AoE Slow ability.

Cons
- Squishy early game
- Requires good timing and some skill for good use
- Vurneable to DoT's, Blinds and Thornmails :)
- Dependable on only physical attacks only.
- VERY item dependant



Skills
Battle Fury - Tryndamere's Critical Strike chance increases as he becomes more wounded.

Plain and simple. Less HP more % Crit. During your Ulti you will have 100% crit. Fun :)
"Crit Crit Crit Crit and i am still immortal :) spank me baby!"

Bloodlust - Tryndamere thrives on the thrills of combat. Whenever Tryndamere kills a unit or critically strikes, he temporarily gains increased attack damage and critical damage.
Passive: Whenever Tryndamere kills or critically strikes a unit, he gains 3 Attack Damage and 1.5/2.25/3/3.75/4.5% Critical Damage for 15 seconds (stackable 8 times). Killing a unit or critically striking while not Bloodlusted applies 2 stacks instead of 1.

Active: Tryndamere consumes his Bloodlusts, restoring 10/20/30/40/50 health per Bloodlust (+1.5).

Cost - No Cost
Range - 0

Your mail ability. It has many uses.
Each crit you get a buff that stacks up to 8. Each stack gives you 3AD (max stacks 24AD) Each stack gives you 4.5% crit damage (max stacks 36% crit damage).
Additional you can "eat up" those stacks and heal yourself for 50HP (max stacks 400HP).

It is all you need early game. Damage, heal and a bit crit damage. Unfortunatly your crit % will be quite low (if on full HP) Try to eat the stacks when you get 8 of them or when its fading off. The cd is quite low so use it frequently to stay in lane as long as possible. Dont get too coky early game, since you will not be that strong yet, just try to creep and heal the harrasment damage via Active. You should prio this skill before any other.

Mocking Shout - Tryndamere lets out an insulting cry, decreasing surrounding champions' physical damage. Enemies with their backs turned to Tryndamere also have their movement speed slowed.
Decreases surrounding champions' physical damage by 20/40/60/80/100, and enemies with their backs turned also have their movement speed slowed by 30/37.5/45/52.5/60%.
Lasts 4 seconds.

Cost - 25/25/25/25/25 Health
Range - 400

Your only crowd control ability (if we can call it that way) This is quite powerfull ability. On max lvl you will slow by 60% for 4 sec. It lasts quite long, Frozen mallet debuf lasts 2.5 sec. Additional it is a VERY powerfull debuff. -100AD on AoE is quite powerfull tool on teamfights. Dont hesistate to use it and dont underestimate it.

Spinning Slash - Tryndamere slices toward a target unit, dealing damage to enemies in his path.
Tryndamere spins through his enemies, dealing 50% of his Attack Damage +40/90/140/185/240 (+1) damage to enemies in his path.

Passive: Slash's cooldown is reduced by 2 sec whenever Tryndamere critically strikes.

Cost - 40/50/60/70/80 Health
Range - 25000

This is one of the most fun abilities ingame. Mastering the use of it is the key to victory in playing Tryndamere. You should know the range of the spin, you should know where and when can you spin to go through walls. Common use in fights is spin in -> Mocking and dps dps dps than spin out to run away.
Take in mind that it costs health and ulti leaves you on 1HP :)
In team fights try to keep the CD to run away or to chase those fleeing enemies.
Skill is very nice for farming mobs. It deals 50% of your AD but it ignores your crit, and your AD will be quite low for quite long time. We dont need that much AD since we focus on lvling %crit asap. When farming mobs try to get those 8 stacks of Bloodlust before using it to maximize the damage you deal with this skill.
Additional each crit will lower slash cd by 2 secs.

Undying Rage - Tryndamere's lust for battle becomes so strong that he is unable to die, no matter how wounded he becomes.
Tryndamere becomes completely immune to death for 6 seconds, refusing to be reduced below 1 health. His abilities have no cost during this time and he gains 4/6/8 Bloodlust stacks.


Cost - No Cost
Range - 0