Pewww, many work to do for simple 2D games xD
Right now I'm learning how to storage and load data to make a save system.
Also, I'm planning to make some improvements on my game, like mining to earn gold, stairs, etc.
You can check how it's going here: http://goo.gl/nnk3Q
I believe the enemies won't get working before November, because it's a hobby, so my time is very short to spend doing games, and design something nice to fight against will be a huge work =(
The critters and some small monsters with basic AIs are coming alive around 10 of August.
The game will use an old inspiration, a RPG game called Equilibrium, where I did the end of the World and how a guy finished up saving the humanity and restoring the Earth with a new whole ecosystem. =P