chaostrom wrote
JoKe: If you have heavy explosives, you can blow up the crystals
As in how heavy? Given that I do not have experience in trying to blow the crystals up, I'm not completely sure whether any vanilla explosives are enough for it. Stacking explosives shouldn't add to the explosion either, as any additional items will AFAIK just explode after the original ignition one at a time as separate explosions.
The heaviest vanilla explosive is the big backpack of gunpowder, isn't it?
As for the spider silk golem, he spawns according to your danger level instead of on any specific level. You just got lucky/unlucky to get him there.