The intro text was quite good.
I think you have the essence of the challenge pretty much there, but (in my opinion) you rely a bit too much on the honor system. Up to the point where you have them gather wheat/carrot/sugarcane/potato/oak/planks/saplings I think was great. When it started to go sideways for me was when you'd just turn in a piece of dirt or a plank and get a pack full of saplings or something. It's good, but I think the turn-ins should be a little more tied to the task. Like require the player to possess clay (gathering task) rather than a turn-in. Or if it was more mod-specific, have it detect when they've crafted all the basic tinker's stations. No need to reward them with items - just give "Reputation" for each age. Let later ages unlock when a player has reached a particular reputation level in the previous age.
It's definitely better than some of the attempts I've seen.
Good work!
