Use Kha'Zix's isolation damage and stealth to pick off Trundle when he is separated from his team or caught in river fog.
Manage vision around objectives to avoid extended fights where (R) and (W) make him stronger and harder to duel.
Jungle Plan
Path toward jungle entrances and river areas where you can isolate Trundle or his camps for burst damage.
Contest Scuttle only when your lanes can collapse quickly to avoid extended fights inside his (W) zone.
Use vision control to set up picks before starting dragon or Herald, then leverage your objective damage to secure priority and deny Trundle's scaling.
Danger windows
Avoid isolated river fights where Trundle can trap you with (E) pillar and sustain through (W) and (R).
Be cautious during objective setups where Trundle's team can collapse and force smite fights you can't win.
Watch for low-health clears or when your (R) stealth is down, as Trundle's dueling strength and pillar control increase threat.
Early game
Start with a clear path that allows quick level 3 power spike and look to contest first Scuttle only if nearby lanes have priority.
Avoid early direct invades unless Trundle is isolated and vision is secured to punish his medium invade resistance.
Prioritize river control and vision denial before dragon or Rift Herald to create isolated pick opportunities.
Power spikes
At level 6, use (R) stealth to reposition and isolate Trundle for burst damage before he can engage with (E) or (R).
After first damage item, increase invade pressure to punish Trundle's slower clear and capitalize on his lower mobility.
Respect Trundle's level 6 (R) power spike which boosts his dueling and sustain, avoid extended fights when it is up.
Win conditions
Convert isolation picks into objective control by taking dragon or Rift Herald after successful skirmishes.
Use fog and stealth to counter-invade or invade when Trundle is on the opposite side of the map or low on health.
Deny Trundle's scaling by forcing fights before he can leverage his (R) stat steal and extended dueling power.
Tip: For Kha'Zix vs Trundle, read overview, trading pattern, and danger windows first for a fast Jungle lane check.