Spooki Invasion

My first game on Unity. It was made during Practice Jam #1 in 5 days.

Story:
You are a brave magician who must protect a special magic crystal from ghosts at the cost of his life.

Control:
WASD - movement
LMB - attack
Space - lvl up (or click the cursor on the button in the game)

P.S. Feel free to offer your ideas for new mechanics, as well as talk about bugs you find. Good luck)