With a bit more content this could easily be a full steam game.

I am very impressed!

Excellently done sir!.

Looks good. I found the zombie attacking me while talking to the first NPC very troublesome.  Maybe you could have an exclusion zone, so they can't enter the area. I had some scaling issues issues when playing, made it fullscreen fixed it.

Out of interest what package did you use for the outlining?

This is a really well made and polished game. I'm surprised by the scope of the content included. Well done! The only thing I'd fix is the fact that Zombies can still attack you while you are talking to NPCs and while you're in the Inventory. 
Overall, great job!!!

The game looks cool but I really couldn't play it in the WebGL version, there are bugs in the UI right after talking to Susie. Can you fix it?