I really want to recommend Terra Restore 2, and have been having some fun playing it, but I can't find myself to find the want to finish this map or play any more of it. The only real challenge of this map is to figure out how you're going to spam left click fast enough to kill the metric-ton of mobs that it pours on you at once without either A) Getting killed yourself or Getting pushed off a high ledge from them and dying.
Another thing about this map that I don't like is not being in survival during the "overworld" sections. I feel that this only limits how creative you can be to deal with the mobs. I could see this working a LOT better if you could at least put down torches and/or break spawners. One final piece of feedback is that I have for you... I feel that there's not enough weapon variety. I've been using the enchanted Bob's Sword (wood sword) since a little after the beginning of the game and haven't found another since (I was attempting to get the 4th wool). For those of you who haven't played the map you may ask, "why don't you just craft a better sword?" I can't because this map uses the 1.8 mechanics for the swords and is build around that (it gives you +1024 attack speed, but if you craft a sword you don't get that)
All in all, you're doing a great job and I like where this is going, but I just can't recommend it at this time. I will say that the story is great, the music is great and the cut scenes and other stuff are very innovative. I get that the map is still in alpha, and I'll be looking forward to its next release. Thanks for making this map.