Here are some of my thoughts;
+I really wish there was a tutorial, last time I was this lost I think it was Terraria.
+It seems like the hatchet is very important to alot of what you do in the game, I would suggest giving one by default.
+ The claiming of territory, how does that work?
+ Your help page doesn't seem to have a scroll bar so I couldn't read the instructions (I'm using Fire Fox so maybe its my browser.
+ Maybe its my connection because the game lags on my end.
+ The low poly look is a wise choice for a browser game, it should keep latency low (I'm implementing similar visuals in my game).
+ The crafting of a fruit spear was easy enough but the tool feels useless, I tried to kill a chicken with it.
+ The game feels like a pototype because the only animals I encountered were chickens.
+ I don't quite understand all the percentages you placed on the left hand side of the screen (I get health but the sleep and meat percentage don't seem to mean much).
+ The server froze me out for some reason so I can't get back in.