All items related to Engineering are crafted at Workshops. In addition, this skill is also associated with other professions. Smelting, Leatherworking, Mining, Logging, or Harvesting will be all useful to get required materials. Thanks to Engineering, you will craft ranged weapons (bows and muskets), ammunition, tools, as well as some white weapons.
To level up Engineering in New World, it is worth creating items requiring easily accessible materials for crafting - all of them can be found in the initial locations of the game world. They are Iron Arrow and Weak Proficiency Booster.
Level 0 - 20:
To reach Engineering 20 level, you have to craft 28 Iron Arrows.
Level 20 - 50:
Then, it is worth crafting 228 Weak Proficiency Boosters. It is a potion that increases the number of materials for crafting you get - which means you will get wood, iron, or leather faster. In addition, you can also sell potions to other players.
Level 50 - 200:
After reaching Engineering Level 50, continue to craft arrows and potions. Creating one item requires the following materials, but it is worth creating both of them depending on the materials currently available.
17300 x Iron Arrow
52000 x Weak Proficiency Booster