Interesting game. I like it. I think it should be harder though.
I think the trouble is that you need a steady supply of food and weapons. If you hit a drought on either, then you will quickly die. The available of the things you need is random, so whether the game feels easy or hard is essentially left to chance.
On the other hand, that's part of what makes the game addictive: you never know how things are going to turn out.
Your long-term strategy is guided by your need for resiliency: You have to collect whatever supplies and artifacts will most likely help you weather a drought in some key resource.
There are some strategies that help, even in the absence of supplies and artifacts--which I think is fun to figure out.