You didn't say before you were a soloist, that might actually change some things. I highly advise you to take at least one or 2 competents guildmates/friends, because of free revives and because in Shadow Lair, having a variety of weapons really helps. You can also split the cost. I wouldn't advise to go in shadow Lair in a PUG at all tho. Bear in mind that FSC is a walk in the park compared to shadow lair.

For UGW, you'll encounter mainly beasts, zombies, kats ans howlitzers (plus some lumbers, which shouldn't hit you at all, that's why you don't take elemental defense). All of them do poison, that's why an armor with poison resistance helps.

So yes, shadow defense is needed. While zombies are not that dangerous, they are not alone. And those kats and howlitzers ARE dangerous.

As far the armors, I didn't listed them by preference order. In fact, unless you already have Radiant Silvermail, I would probably take Skelly as my first choice because of normal resistance. Even there, there is still a lot of normal damage. Second would probably be Skolver due to sword damage bonus, and i would take Radiant Silvermail as last, unless your other armor part have neither piercing nor shadow resistance, in case you really need both (which isn't your case).

As for the rest of the revised weapons, it seems good, but I insist I very highly recommend a Polaris to be able to deal with those Howlitzers from a distance (sometimes, they are behing some poison bushes), and just to be able to randomly spam it against Kats while retaining the ability to dodge them and use your shield at any time.

Bombing is going to be hard, because there are SO MUCH THINGS to avoid. Even more if you are alone i think, although I never tried myself.

Metagenic, you have clearly thought about this, and you raise good points. However, Fradow raises better points.

With no teammates to distract the monsters, all of them will be coming at you, and you may not be able to charge a bomb at all. In the boss fight, you may be able to work the bell and hit the Snarbolaxes, but you will not be able to suppress the swarm point as well. Unless you're super-skilled and an extremely fast learner, you are going to spend 1,350-1,800 CE on the Shadow Key and multiple thousands of CE on reviving.

If you have so much CE that throwing away 5,000 or so is no big deal, then go ahead and try it. Otherwise, I suggest that you practice playing in parties, assemble a party of people that you respect and trust, and then do SGWW with them.

About the gun: I didn't have any gun when I did SGWW, but other people in my party did. The gun should definitely be elemental.

If you are strictly a solo player, a polaris shouldnt bother the nonexistent teammates. Besides, using a pulsar line on a turret is usually harmless, assuming ur teammates dont try to fight everything else around it.

And like what others said, in a solo group, you are the only target of every monster. That has to be taken in consideration.

Edit: Heating a fsc set is still a good idea, assuming you grind the crowns instead of buying ce. Learning to deal with swarms of enemies while dodging projectiles would be a good skill to learn, and much less punishing in fsc instead of shadow lairs.

I fully understand the appeal of soloing, but after having done a shadow snarby run now, I would like to explain that attempting to solo it is an incredibly stupid idea. The value of a group, more than anything, is the added HP gained from post-death spillover damage. If everybody on your team has 1 bar of health left, you have four hits until party death, even though every hit is dealing something like 10 bars. And you can keep reviving each other to prolong the deal. You get cheaper energy revives to get more spillover health, and you can split the cost of the key.

A perfect shadow lair solo run wouldn't cover the cost of the key, and you'd lose money. And it's very unlikely that'd happen. You will die.

Also, I recommend a shadow shield rather than a piercing one because alphas will break your piercing shield anyway. Dread Skelly worked exceptionally well for me with its poison resistance. Also, the only source of elemental damage is the lumbers, and they're going to kill you in one hit even if you're shielding with an elemental shield, basically, so you should plan to avoid them rather than taking elemental defense.

Edit: Dread Skelly ninja'd.

My gear for SGWW was: Skolver Cap, Armor of the Fallen (even better than Dread Skelly Suit), and Barbarous Thorn Shield. There is no curse to worry about. I agree that a shadow shield would be nice; I just didn't have one, at that time.

So Bluescreen, your planned loadout seems good. I didn't paid attention to armor of the fallen before, that's why i didn't suggested it (thanks Bopp).

As for Voltedge vs Leviathan, i would go for the Voltedge. I don't feel you are going to use a charge that much, and the Levi's charge is dangerous anyway (for your teamates, but also for you because you have to go very close).
Which leads me to my only critic on your loadout : the Sword Focus Module : except if you have nothing else, I feel it's probably not the best. Shadow Lair is just not a place you can easily charge. On the other hand, ASI or DMG is going to be useful to snatch those extras hits/damage.

As for SGWW worth 2 trips, I would say yes, totally. I will go back there just for the challenge of doing it (even tho it costs money). And check if the price of the Nightmare mane is not close to what you pay per person for the Shadow key (I have totally no idea there, didn't check the price).

Bluescreenofdeath, your loadout looks really good, although Fradow's suggestions would make it slightly better. In any event, you'll be fine.

I bought a Nightmare Mane ahead of time, but I could see doing SGWW twice. It's pretty fun. SGWW might be harder than SRJP, but my party for the latter was much stronger, so I can't be sure.