It's a nice Dungeon Crawler, but only if you play with Archer - you can then kill all enemies at distance, just by holding a key and pointing at them. Wizard stuff is "casting" too long and deals too less damage and knight requires space to play - you come closer to enemy to attack and you have to step back and attack again in order for enemies not to hit you and you having possibility to hit them. So the classes determine the gameplay. The enemies are very simple - just getting closer to you to hit you melee damage. It lacks diversity for enemies - perhaps it could allow to make different classes useful. It's very basic and not much enjoyable, but it's playable, so good for you on making a game!