Per Manbearcat
By descending some 40 feet, you can reach another landing that would give you some legitimate cover (+ 1 armor in case of any physical attacks against you). However, it would put you in Near Range.
You can stay in Far range by navigating the obscenely dangerous landing that you're on and continuing opposite the way you came in. The landing narrows considerably and is slick and crumbly. You would have no cover but no spears could possibly reach you there. A fall from there would literally be to the bottom - b[1d10 + 5 (no armor)].
A 40 foot descent to safety and a sniper's nest with cover would be nice, but that would take a fair bit of time, would it not? I'd be out of the fight for too long. Relying on my agility and balance, I dart along the dangerously narrowing ledge, out of the Warlock's spell cloud and to another sniping position.
[sblock]Defy Danger (Dex)
1, 3 + 3 (+1 DR) = 8
Success but a worse outcome, a hard bargain, or ugly choice.[/sblock]
Per Manbearcat
As you deft tightrope act achieves purchase narrowing ridge, you escape the Warlock's growing miasma before it can overtake you. But the narrowing is so severe that your archery posture is dramatically stunted (you take - 1 ongoing to Volley, Called Shot, etc from this position). If something goes wrong up here (eg a danger from a 7-9), you're looking at the prospects of that terrible, aforementioned fall.
As you skirt along the precarious ledge, you feel, hear and then can see Otthor's Fireball light up the battlefield. His physical form now in view, he is making a run for the breach that he has just created. The call for charge echoes out behind him and goblins, human barbarians, a druid chapechanging into a snow leopard, 3 peregrine falcons, a large bear, and a ghost dog are a cavalcade of noise and fury.
Four more myrmidons form up in a phalanx as the charge commences, long spears peering over locked shields. The other warriors prepare to throw short spears. The one warlock is getting off the avalanche debris to get his staff and the one that just cast the miasma on you is winding up another spell in your direction.
You can make another move right quick.
Honing in on the warlock attempting to take me out, I string another arrow from my awkward stance and loose. I whistle to Rawr as I do, signifying my target. His big bear head looks up to me as he lopes quickly forward and then looks on as my arrow flies free.
[sblock]Volley (Dex)
6, 4 + 3 (- 1 ongoing) = 12
d8 damage to the Warlock. 8 - 2 = 6 damage.[/sblock]
Per Manbearcat
As the Warlock prepares to release an Eldritch Blast at you from his staff, your arrow penetrates his defenses and catches him cleanly in the shoulder, almost taking him from his feet.
But the arcane energy streaks from the Far Realm runes on his staff, homing in on your precarious position high above!
You're going to have to DD at the beginning of your next turn.