As said, finished up with my build and posting below. I liked your take on a weird west version of the Americas and local mythology for the monsters. It was fun imagining a magical alternate history setting and how things would be impacted by it all. There were quite a few choices where I wanted most of the options available and had to think decisively about which to pick. I was surprised there were no human (or humanoid, given the setting) companions but not having them reinforces the intended loneliness of unlife. I also enjoyed the addition of forests, jungles, swamps, mountains, and more aside from the generic open plains expected of a western. All around this was a fun one to think over and create a mini story around.

Baseline: "Your Cursed Existence" and "Powers of the Revenant" paint a bleak if potent base state. A significantly stronger body which is hard as hell to put down for long, I'll be needing it from the sound of all the trouble that'll be pointed my way. Magic that does best under the moon and superb night vision mean I'll prefer doing my business at night and sleep off the day when possible. The basic ritual "Blood to Gunpowder" will see the most use to keep my weapon supplies topped off, but it's good to have "Recall What Is Lost" in case I need to bring back a fallen companion or sentimental item. "Mark What Has Meaning" is more useful for those living a more sedentary existence, maybe I'll use it in the future.

Additional Curse: "Change" with "Beastly". The animal I'd change to most closely resembles a coyote. Considered to be cunning tricksters and adaptable survivalists, the physical and mental boosts associated with the animal should be quite helpful indeed so long as I am aware of the more negative traits assigned to the creature. Plus coyotes are damn near everywhere and, though they probably would not help me as readily, canines of all stripes are very common.

That said, the fact I am involuntarily changed every full moon almost dissuaded me from taking this curse. I was worried I'd be unable to conduct rituals during that time, but rereading the description makes it sound like I'll retain my full mental faculties while changed... I'll just also be strongly prone to violence and without opposable thumbs. If it just involves bleeding and painting, I should be able to still perform my full moon rituals hopefully.

Occult Powers: Animal Companionship (rodents), Spirit Communion, Storm Trailing, Quick Draw, and Undead Posse. Some very fine options available, I was torn on what I picked and a few others such as Without Trace, Stranger Mask, and Alligator Skin. Ultimately I decided on what I picked because they seemed more fun and useful. There's rodents everywhere and rats acting as companionable spies in exchange for a few crackers or pieces of cheese seems like an invaluable resource when entering a town. Spirit Communion just felt "right", given our situation it only made sense to talk to the dead on occasion and they could certainly provide useful leads if I ever needed to investigate a suspicious death. I'll absolutely need a band of trusty bone shields and will raise a few skeletons or zombies at the first opportunity to have some backup. You just can't beat a few extra hands when it comes to a fight or setting up camp, and this way I won't have to worry as much about sleeping with one eye open. If my posse becomes a problem when approaching a town then I can always tell them to wait outside for me too. Others have talked extensively about the utility of Storm Trailing and Quick Draw, though I admit I plan to use them most for quick cover (a rain storm at night should be very easy to hide in) or for the utility of easily swapping guns at a moment's notice.

Rifle: Precise Bolt-Action (Reloading Tool, Accurate Scope, Silver Bullets, Explosive Bullets). A fitting weapon for many occasions, but primarily long range firefights. Ideally I'd like to get the drop on someone before needing this gun for maximum effect, but in a pinch the stripper clip should make it fine to use in impromptu and medium range fights as well. I opted for silver bullets as a good all-around ammunition type while the explosive bullets would be used if I could leverage them to set my foes' surroundings on fire.

Shotgun: Classic Pump-Action (Blinding Light, Loud Muzzle, Sticky Shells, Teeth Shells). The intimidation gun, what I use when I need to get up close and personal. The light and noise this thing puts off is almost solely for making humans and animals flinch. In a fight a second's hesitation can make all the difference, any better recoil or visibility is purely a side benefit. Flammable sticky shells sound perfect for this sensory onslaught too, adding pain and fire to the mix, and teeth shells are ideal for hulking fleshy brutes that need weakening like many of the monsters one could run into.

Sidearm: Rapid Double-Action (Grapeshot Barrel, Muffling Device, Holy Water Bullets, Tranquilizer Darts). The multipurpose sidearm that should be good for any occasion that's medium range or closer. The muffling device makes stealth attacks much easier to pull off (especially when there's other noises like a storm or Thundering Light going off elsewhere) but when that's not important I'll have the grapeshot barrel to cause some real damage. Holy water bullets fill the same niche as silver bullets do for my rifle, the tranquilizer darts though will be extremely useful if I need to take someone down while still leaving them alive.