My talent tips after playing over a hundred hours at v0.5.8.5b
MC:
Strength 8 (2 from cutting trees) = 10 enough for mining iron
Dexterity 18 (2 from helping Claire cut potato) = 20
Intelligence 0 (2 from reading, 2 from casting witchcraft spells after completing witchcraft quest) = 4
Constitution 18 (2 from farming) = 20 (**reach 10 asap over any other talents!)
Perception 1 (2 discovering after having 1 point) = 3
Hunting 2 (1 based point, 2 from hunting, 1 from Corven) = 6
Nature 0 (1 from Katherin, 1 discovering) = 2
Thievery 3 (1 from Bianca, 2 from lockpicking) = 6
Witchcraft 1 (1 from Sabrina, 2 from casting witchcraft spells) = 4
Weapon Mastery 0 (1 from Lyvia) = 1
Armor Proficiency 0 to 14 for requirements
Save leftover talents for future update.
Tia:
Strength 10, enough for cutting trees
Constitution 20 <priority
Nature 5 (for learning advanced recipe)
Armor Proficiency 14
Dex 20 < last
After Dex 20, pump strength and Armor to 20, but by then it'd be over level for the game anyway.
Lyvia:
Dexterity 20 <Priority
Perception 20 (seems to help MC's perception loot table, not perception check.)
Strength 20
Constitution 20 <Last
In general, dexterity is the best talent for dealing damage, due to how powerful critical hits are (300%? + ignore resistance?). Constitution is the best talent to survive the encounter, bcuz healing is based on health%. Lyvia comes with high hp, so pumping her Con is not that important. Tia's Taunt can help her survive if needed. Her job is mainly to deal AOE with her Sweeping Strike.
Speaking of Taunt, this skill has a few unwritten effects. It comes with damage reduction like the Defend skill, so it makes Defense a redundant buff if Tia casts both skills. Also, it can be override by effect, such as Mark Target. If an enemy casts Taunt, MC can cast Mark Target on him to break the enemy's Taunt.
Hunting doesn't increase bow damage, (or if it does, it's not noticeable, based on my testing). Strength seems to be the talent to boost bow damage. Its main purpose is to learn new bow skills: Pin Shot (7), Poisoned Arrow (9), Double Shot (10). Tbh, I find them not good enough to sacrifice 4 more talent points to learn. Poisoned Arrow is probably the only good one. Plus, once MC learns to use sword, he can equip Gritwail, which comes with Massacre skill that's basically Lyvia's Sweep Strike (AOE hit 3 times), it outclasses all these skills.
Anyways, that's my talent build.