About Landtraveller: I enjoyed a bigger focus on combat in Terraria than in MC. Will the game be challenging beyond level 30? Will the enemies have primitive AI of "walk into target"? If it's possible I'd like any and all info about combat. Really excited for this.
Developing deep AI in an uncertain environment like a constructive game will be difficult. I want the AI for enemies later in the game to play somewhat intelligibly, it is always a nice surprise for players. You'll have to wait and see here.
The combat comes down to the abilities you chose, the equipment you made, the weapons you use, and the special moves you perform. Every one of these has a small beginning implementation in the public demo except the special moves. I don't know if I'm going to call them "special moves", though.