Please, allow arrows keys in addition to WASD, think about people who have international keyboards (DVORAK, AZERTY ...etc.).
Or better, allow to click on the floor and automatically move to the desired direction.
Interesting game for a 1st attempt.
Your "Game mode" menu at start is truncated. Under Unity editor select "standalone" in place of "free aspect" from the game tab, you will see your game with the same resolution as here.
3/5 and I could increase the note depending on future updates.