Mastery abilities don't really fit with the slow-life feel of a Snowpiner, but here ya go. These are all inspired by Artisan mastery abilities, except geared towards survivalism with little reliance on towns. I don't have a Snowpiner, so I don't know if any of these are already in the game. The Wiki says there's no guild abilities at all, though.
1.
Herbalism Mastery is a skill learned by survivalists of the Snowpine Lodge.
There are three tiers to this skill, each with different prerequisites and requirements.
Apprentice Herbalist: You receive a 10% bonus to your foraging rolls.
Journeyman Herbalist: Your foraging bonus is increased by 10% and roundtime reduced by 1 second.
Master Herbalist: Your foraging bonus is increased by an additional 10%. Roundtime reduced by 2 seconds, also surveying plants is reduced by 1 second.
2.
Carving Mastery is a skill learned by survivalists of the Snowpine Lodge.
There are three tiers to this skill, each with different prerequisites and requirements.
Apprentice Carving: You receive a 10% bonus to your woodworking related rolls.
Journeyman Carving: Your woodworking related bonus is increased by 10% and roundtime reduced by 1 second, unlock new recipe (Wooden hoe).
Master Carving: Your woodworking related bonus is increased by an additional 10%. Roundtime reduced by 2 seconds, also reduces energy cost by 2, also unlocks new recipes. (Wooden mortar and pestle)
Total Bonuses at Mastery: 30% bonus, 3 seconds reduced round time, reduced energy cost by 2.
3. Leatherworking Mastery from the Artisan guild.
4. Wilderness Stealth from the Udemi guild.
5. Shelter Crafting
Unlocks the ability to make temporary shelters using natural foraged items.
Shelter requirements (example):
1 large branches
12 medium branches
1 lifevine
Being in a room with a shelter provides warmth and increases recovery speed. Leaving the room destroys a shelter.
6. Kiln Forging
Unlocks the ability to make temporary kilns using naturally foraged clay.
Kiln requirements:
Make sure you have at least 6 clay, and 1 campfire teepee on the ground.
Add branches to kiln to keep it working.
7. Pottery, sort of.
Shape clay by hand in the wilderness using clay and water. Pots, once fired in a kiln, can be used to hold water like a bucket or for holding stuff like a container.