Boring.
A massive dungeon! Endless rooms filled with monsters to fight and loot to... well, loot. Every adventurer is talking about it!
Unfortunately you are not an adventurer. You are the final boss fight, stuck in One Room, fighting endless increasingly equipped adventurers until you die. Great. And on top of all that, the developer didn't even bother to make the game fun. Enjoy!
W/A/S/D + Left Click
Boring.
could be better. I like the concept, but it could use a bit more variety of gameplay, despite being submitted already. Try either making new attacks, like game end-bosses sometimes have. Also, there is no challenge to the game. As far as I can tell, you cannot die.
Overall:
Good concept, but it needs further development in both character and gameplay.
I honestly think with added music + sound effects and a little more work on the game itself it could become fun and even somewhat addicting.