I stand corrected. Explosives also work.

Pickaxes are still more effective, though.

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.

Try it out in wizard mode: one leg as unicorn horn and one as leather. Unicorn horn has flexibility rating of 1, hence the leg should have 4 dexterity. The leather leg on the other hand has a flexibility of 10, giving the leg a dexterity score of 40. If the dexterity score shown on the character sheet shows the average, it should now show it as 22.

Wait until you get up to enner beast, you'll better have a more durable light source than a lantern when you do.

The value is multiplied by 4 for each limb, not just the total.

"%n greets you as a Champion of the Cause!" is the exact message. So yeah, they do.

The AGI/DEX values are average as well, but since the value for both of the limbs is the same if the material is the same, it only shows the value they both are at.

In wizard mode, the limbs can be made out of anything. In a real game, nothing can be transformed into either gases or liquids.

Right, so to translate the limb DEX/AGI from the flexibility value you just multiply it by 4. The stats shown on the character sheet are the average of the stats of your limbs.

No clue for the lantern weight, easiest way to test that is wizard mode.

Best light sources are those that weigh the least and cannot be extinguished, i.e. light crystals at around 200g or flaming swords when wielded as a weapon for 0g added weight.

Illithium lanterns are cool for the novelty value.