I'd rate this as an intermediate level map - it's not full of beginner mistakes but it's not up there with the top maps, either. I think there was an overemphasis on monsters, though I will say the difficulty ramped up smoothly playing on normal. The battles would've been more interesting with a fusion pistol, to take advantage of many monster's weaknesses and to get more chain reactions going. You should also make sure there aren't whole groups of monsters that congregate together without attacking. The final battle was well constructed in a couple ways. First, the geometry was complex enough to allow the A.I. to chase the player in different ways, and secondly there was a good sense of anticipation after hitting the switch, waiting for the climax to arrive. Ironically, it was advantageous to leave the green fighters alive to absorb projectiles from later waves. I would've liked to see some small-scale nonlinearity, more glimpses of spaces the player will visit later, and some cases where the player gets the high ground. Lighting was odd in some places, particularly in the interior Jjaro-themed room. There's no effort put into story or exploration, but I say that's a good thing. It means you had the discipline to stay within a limited scope.