Aside from what has been shared by both of the good masters above. I would like to add
1.Know your strike range and go for the Archers at the possible furthest range that your sword can still hit them. The closer you are the more you expose your own hitbox to a tight angle for their shots
2.After killing an Archer and the other has not spawned try to go to the middle. Your best bet is if you are on middle ground and an Archer pops up from below. When that happens rush to it and wack it usually when that happens you will get them to stunt momentarily (or move slowly, they have to think what to do with your sudden surprise

) and for an easy kill
3. Archers usually shoot in 8 directions so try avoiding their 12 o'clock, 1.30, 3 and so on positions. Of course we sometimes have their arrows fly at such weird angles even if they released it at a straight line
