A fight against two Dragonriders. One is up on a platform using a bow, the other is on ground level using a shield and halberd.
The one with the bow has significantly less health so take him out first. Use the dragonrider with halberd to destroy the platform and bring the archer down. Then just bait the dragonrider with the halberd away from the archer, bait an attack and then dodge/run away from him back to the archer and you'll be able to hit him couple of times. Do this 2 or 3 times and poison will take effect. When either one of them drops to 50% hp, the archer changes its weapon to halberd.