Some feedback:
The fact that the spawnroom has a single exit that opens into a corridor may make spawncamping easier. Having a health and ammo pack right behind me will make it even easier. I still recommend adding a second spawn exit and/or opening up this corridor to make it easier to push out of spawn in the event of a spawncmap.
It's very easy to get outside the map. Use clip brushes to keep players where you want.
There's an invisible wall keeping me from moving through this window, even though I can stand in the window...
Also here. That's not to say you shouldn't use clip brushes; just make sure there's something to indicate that you can't go that way. Valve maps use cliffs, walls, and props to indicate out-of-bounds areas.
The layout of your map is very linear. Although it appears you're trying to use the
Viaduct formula, it's not implemented excellently as there is, essentially, only one route between spawn and the point for players to take, due to the mid courtyard (bottom left) that all players are forced to walk through. Let's look at Viaduct:
Notice that there are 3 distinct routes leading from spawn to the point, and at no point between spawn and the point do the routes ever merge or come together. This provides a variety of ways to approach and attack the point and prevent the enemy from denying access to the point.
You've got a lot of unnecessary space and brush faces under your map. This is sloppy mapping and can lead to optimization issues down the road, and it also extends your compile time. I recommend deleting the bottom skybox brush and sealing with the floor of your map- it's the most optimized way to seal your map.
Add some more light in this area, it's pretty dark.
Some other general feedback:
-Your skybox doesn't match the theme of your map (the moon doesn't have clouds). Although this isn't overly important in an alpha, it may confuse players. rd_asteroid didn't use a 2D skybox, but instead made its own in the 3D skybox using stars (you can see how they did it in the
decompiled BSP), or you can use a custom skybox like
this one.
-Your map has
very little health and ammo. Add some more so players don't feel starved for health.