The wiki might be a bit more readable if required objectives were in bold, and optional ones preceeded by a symbol (could vary by difficulty) (unicode has a great selection, such as ☆ ★, ▷ ▶, ♙ ♖ ♔)
If the "Opitional" ones were labeled? You don't seem to grasp how this challenge works. Here's a hint: They are all optional. Unless you want to do hardcore mode and get all the points, in which case, that's your choice to do all of them. What you do in it is totally your choice. The scoring system is optional, for crying out loud!
Everything can be skipped, but if you want to do the challenge a certain way, you can.
Now, a more serious question here guys. Mostly aimed at @
Maul_Junior due to it being a mechanic ruling that I want to be clear on, but I'm using GregTech, and GregTech has a very unique thing in it; steam powered machines. Many machines have a steam powered variant, and I was curious if one would be allowed to use steam power a tier earlier then redstone discovery since it's much less advanced then generic GT things. I honestly plan on using Engineer's Tool Box and it's Modular Sockets for most tech based things, but thought I should check and clarify if using steam powered GT Machines would be fine at Iron Village since it's lower tech. I would still have to find(and mine) the copper and tin to make the thousands of bronze ingots for those things, but still, it's a question on my mind. I plan on mixing Dwaven Home Defense style, and my earlier choices on Sergal's, but ideally with a village near a Hotspring, and a desert(or similar).