There's loads of potential in this! I love the grid-based movement (might've preferred A and D to turn but that's just personal preference), and the the sense of exploration. Love the art style too, the monsters were really cool.
I did get soft-locked dropping down a level and then not having the parts to craft a flamethrower and not being able to return to the top level (unless I missed something), but would be really interested to see a more complete version of this.