Chemistry
Unlocks Lesser Potion and Poison plans and the ability to craft them.
Chemistry II
Unlocks Greater Potion and Poison plans and the ability to craft them.
Conduit
Unlock the ability to imbue crafted creations with magic by using crystal.
Foundry
Unlocks Lesser Weapon and Armour plans, the ability to craft them and repair them.
Foundry II
Unlocks plans for Greater weaponry, armour and gadgets which can be crafted and repaired.
Gunpowder
Unlocks Lesser Guns and Pyrotechnic plans, the ability to craft them and repair them.
Gunpowder II
Unlocks plans to create Greater guns and pyrotechnics, which can be crafted and repaired.