The map properties (or whatever they're called) are wrong, you should set them to MonsterHunt gametype because if you double-click on the file it starts as a DeathMatch game. Everything else is fine, no HOMs no BSP holes, nothing. Nice job for your first map, I like the spawnpoints, the skincoded monsters and the ForceField powerup.
Plus that water pool is perfect for drowning.
God darnit there isn't a single tutorial that tells me how to add anything, they all go into lighting and zones, I don't want those I want to know how to add a friggin floor!