The game is fun, but restricting to the numpad was a bit tedious. The tracking of the mobs was maybe too fast. Could have skipped a turn from chasing the player when you get within 1 grid square.
Thanks for playing! They should skip their first turn when they first catch sight of you ("The goblin shouts!") -- if they aren't then that's a bug.
You should also be able to use vi controls if you're used to those -- same as DCSS or the like.