Amazing work!
I didn't understand how you were growing weapons, but you can use wood to build axes.

the guiding text is nice and gives the game story feel, would be nice to give player control over speed of displayed text.

Keep at it! The long comments mean that you are at a great place to begin with. 

cool :D

The idea is nice, the graphics and the usage of the graphic is great, sound is good, didn't like the 8 bit sound effects though as its conflicting with the music quality.

Good job !