which attributes for demolitionist skills

I have a question regarding the demolitionists skills and which attribute (spirit vs cunning) is the most beneficial to that particular skill. A lot of them seem to be mixed so I am a little confused. I was hoping to go with fire strike and a few other active abilities in the demo tree (bombs or mines)

  1. Fire strike - Does weapon damage but also fire damage, especially if adding in explosive strike and brimstone, and lighting from static strike. So is cunning or spirit better for fire strike.

  2. grenado - at first it does all physical damage so it would benefit from cunning I assume. But if you add in high impact and/or skyfire you add in a ton of fire/lighting damage, so at that point is cunning or spirit more beneficial?

  3. Cannister bomb - it looks like it does just fire? so does this just benefit off of spirit?

  4. thermite / hellfire mine - Again looks like fire + chaos damage so this would just benefit from spirit?

  5. Mortar trap - What is the damage type from the first part of this skill? Then when it gets to the big one it adds in phy/fire/lighting, so again what is better cunning or spirit?

  6. stun jacks - lightning and physical damage - which is better here?

Blackwater cocktail is the only one im not confused on, that looks like pure fire damage.

Thanks!

Both spirit and cunning arent worth investments for damage boost only. Spirit is worth it only if you have good use of additional energy regen, or if it will allows you to fulfill gear requirements. Cunning is worth it only if it allows you to fullfill gear requirements.

Hmm so your saying that physique is the best attribute to dump my points into when I am meeting the gear requirements in cunning and spirit? But then what about gear that gives attributes. I assume I am going to have to pick another skill besides physique to focus on and pick my skills accordingly. so this doesn’t really answer my question.

I would still like to know which skills benefit from which attribute so I can choose accordingly if I decide to have more cunning then spirit or vice versa.

You’re reading too deep. It doesnt matter that much.

Cunning gives you OA but you get that from gear, skill and devotions.
Physique gives you HP and DA which lowers your chance to be critted.

Spirit is only for casters and /or simply to meet gear requirement.

You get the bulk of your damage from gear, skills and devotions, not attributes which will sort them selves out from Mastery investment. In most cases you will want to dump the majority of your attribute points into physique.

Yes, physique is the best attribute to dump extra points! Some builds, that use expensive skills AND deal magic damage, may chose to dump extra points into spirit. Dumping points into cunning is never worth it.
Sure, “dumping” means spending points above the bare minimum required by your gear. Being unable to wear good gear piece is no good at all!