I use a macro for my 109 archer. I get S all the time for Stage 2. So we can't blame macro alone necessarily.
It always comes back to same things. How did ppl build their archers? Or more correctly, where are they in terms of their archer build?
Rim Kamaloka is made to challenge even top characters who have everything maxed out, i.e., ++++ limited bows or Stage 1 Dragon/Curse weapons, triple stat dyes + with Power or P. Skill Crit. Damage boosts, +18 Elmore Cloaks, 5-6 Greater Jewels, +6 through +10 artifacts, God jewels, +5 or more Shilen weapon stones, etc. They had to make the mobs hard. Anyone with average or even above average equipment should not be upset. You are doing best you can with what you have. Keep improving your character. One day it won't be as hard.