A perfectly functional game! I don't know if you will get away with a roguelike having so few buttons though, for example right now you can't drink a potion while standing on stairs. Also having no diagonal movement can cause some awkward situations, for example I died to a troll because I couldn't get out of the room we were in because he'd mirror my movements and then its impossible to run out. If you could move diagonally there would at least be a chance to run around. Other than that I'm mostly missing standard RL things that you probably just haven't added yet.
- Let me hold down a button to keep moving and a button for moving in strides (e.g. press M then W and you walk through the entire corridor).
- Button for looking/inspecting things
- Picking things up destroys the item if inventory is full? That's evil
- If inventory is full and I drink a potion it always drinks the last one, is the inventory being reordered?
Not knowing what items are on the floor and being unable to check unless you start drinking your inventory away was probably the biggest thing though.