I finished the demo, it is about 10+ minutes long.
There is something quite captivating and atmospheric in the game even though the design was very simple, it's somewhat intriguing. the maze is interesting, it's kinda fun, but what's pulling the game down (so far) is the combat because it's just pressing space over and over again.
The art style is really nice, the whole game I don't feel like controlling a square but instead controlling a person from a top-view perspective. What I think really shines in the game is its story, it's a story about a man that joined the military, I hope the main character will hopefully be more explored in the final version.
If the finished version is going to improve the game, then I will give it a 5/5 but so far I can only give a 4/5.