Delaying the activation of Undying Rage is a very effective way to make an enemy champion over-commit to trying to kill you.
If the enemy is stacking Armor, try building items like Last Whisper or Youmuu's Ghostblade.
Bloodlust is an excellent way to heal Tryndamere. Try not to let it fade off before you activate it.
When Kayn is in terrain near you, you will get a visual warning on the edge of the terrain he's in.
Umbral Trespass requires Kayn to damage a target first. Try to dodge Blade's Reach to deny him a long range cast of Umbral Trespass.
Damage Kayn while he's in Shadow Step to shorten its duration, or apply hard crowd control (stun, charm, knockup, etc) to end Shadow Step immediately.
The stat comparisons shown here show several valuable Tryndamere versus Kayn counter statistics that may help us realize the differences and similarities between the two. As an example, Tryndamere’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Kayn’s ratio of NaN, demonstrating that Tryndamere may be more central to his team's team fighting effectiveness than Kayn..
Tryndamere usually has a similar longest killing spree as his enemy does. Typically, he receives a similar amount of damage to Kayn. This typically indicates differing health capacities, but it can also hint that the one champion has less agility and thus is not able to kite away from additional damage when poked or engaged.
Both League of Legends champions are great. Both champs have their pros and cons. In League's current meta, Tryndamere usually fairs equally well when playing against Kayn, with a 50.8% win rate. As a result, Tryndamere makes an ok counter to Kayn.
While Tryndamere does have a higher win rate than Kayn, when facing one another, Tryndamere also has a lower level of difficulty that makes him a less complex champ to learn. You still need to be cautious when picking Tryndamere into Kayn.
Moreover, Tryndamere has only a small amount of utility and CC, a similar amount to Kayn. This makes her just as valuable during team fights, especially when fighting champions with a ton of burst damage.
While there is not a single best champion in League of Legends, in Tryndamere vs Kayn matchups, Tryndamere is the better champion with a similar win rate, less champion complexity, and a similar amount of utility to help out your allies during team fights.
Tryndamere is a decent counter for Kayn. Focus your actions on keeping up your gold and cs and clearing objectives. If you do that, you should do very well as Tryndamere against Kayn.
If you would like to learn all of the intricacies of Tryndamere to counter Kayn during both the lane and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tips and tricks for this matchup. If you pay attention to the build and suggestions shown above, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Tryndamere typically gets much more CS relative to Kayn. Champs who typically don't acquire many minion kills often don't need much CS to be effective, such as supports. These kinds of champions are able to scale well off of their abilities and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, typically require several high cost items to be effective. In either situation, try to do better than the values displayed here to do well.
The best items to use in your Tryndamere versus Kayn build consist of Infinity Edge, Phantom Dancer, and Blade of The Ruined King. When Tryndamere bought at least these three items in his build, he performed much better when facing Kayn than with many other common item sets. In fact, Tryndamere boasted an average win rate of 50.8% when countering Kayn with this build.
To have the greatest probability of defeating Kayn as Tryndamere, you should take the Lethal Tempo, Triumph, Legend: Alacrity, Last Stand, Second Wind, and Unflinching runes from the Precision and Resolve rune sets. Out of all the rune combinations players picked for Tryndamere vs Kayn counters, this combo of runes yielded the greatest win rate. Notably, these runes provided a 50.8% winrate overall.
By default, tips, stats, and builds on how to beat Kayn as Tryndamere are given for all ranked divisions. To scope the stats and builds to a distinct skill level, you can use the selection menu earlier in the counter matchup guide.