Thanks for sharing your demo! We also used a NavMesh for the first time so it is cool to see what others can do with it.
It was cool to sort of explore this unfinished project. It almost added to the mystery. It is similar when dataminers find unused assets in a game and it makes you wonder what they were for. Like I know you mention that this is just a demo, but the level was fairly fleshed out in terms of different thinks going on. For example, it was cool to see those block dispensers shooting out. It made me wonder what you ultimately wanted to do with them.
EDIT: I forgot to mention, it would be great if you added a reset button, just cause I fell off the map and then couldn't get back without restarting the game