Guild Wars 2

Is there a telegraph for where and when the rocks are going to pop up during the light the fires phase?

Yes, Red Circles everywhere.

Do you mean the crippling rocks? Some dust starts to pile up on one side of the arena, the rocks will come from there.

Definitely not on my screen.

Urosh Uchiha.9732:

Do you mean the crippling rocks? Some dust starts to pile up on one side of the arena, the rocks will come from there.

Yes, those. I will try to look for the dust.

Those are the ‘cross rocks’ and they have a fixed pattern (2 diagonals). But sometimes, they pop real fast, especially when you are near the border to light a fire, ughhh, which makes it harder to notice the upcoming dust.

Having no AoE circle is really annoying. The worst is when you get hit by those rocks because they spawn on you instantly if you were near the edge of the ring.

Might need to turn up your settings. The puff of cloud appears in a straight line, and staying slightly off the center of the room will almost always guarantee that you’ll avoid damage, or see the telegraph and dodge out of it. Dodging through when the rocks appear doesn’t appear to work.

There’s a large straight line dust animation that crosses the room during the rock attack. It can probably be spotted slightly before the first rock hits, but you might not have enough time to react if the attack starts on top of you.
If you’re going for the achievent, try to not channel when a rock attack is about to happen.

Dragon attacks follow a fixed pattern: CLAW-CLAW-ROCKS-BITE-(ROCKS)
The second rock attack will happen only if bombs spawned or naturally exploded during the cycle.

If you have access to a long enough stability, try to channel during claw attacks.
Stay near (but not too close) to the channeling spot right before the bite attack. If bombs didn’t spawn/explode, dodge out of it towards the spot, use stability (unless it’s instant, in which case you can pop it during the first claw attack), channel and move out towards the center of the ring so you can see the rocks coming.
If, on the other hand, bombs spawned or exploded, then a second rock attack will be coming. Dodge the bite towards the center of the room and watch for the dust animation. Once you’re sure that it won’t affect your targeted channeling spot, run to it, pop stability and start to channel.

If you’ve no stability or other viable tricks, you would need to rely on braham bubbles or channel after the claws and pray for the rocks to not spawn at you :P

Make sure you have your graphics animations turned to medium or high in the settings. I have a feeling that setting animations to low would get rid of the puff of smoke that lets you know when the line of rocks is coming. (The smoke puffs are similar to other animations that low settings get rid of).

Or just get a mesmer to make a portal so you can stand outside of the circle during the fight while your party handles it and you get the achievement. That’s what I did (my team cycled who got to be ported out and who stayed in a couple times so we could all get the achievs)

The dust is definitely there but can be hard to spot because it’s a subtle effect, the same color as the ground. Worse, if you’re trying to light the fire and there are color/particle effects happening under you it’s even harder to see dust forming under your feet. A single dust cloud also has no orientation so if one forms under you it’s still vague as to which way you should run. Even when I knew what to look for I would still get hit by a rock seemingly from nowhere.