nice looking map, although my main issue is that the portal placements are dreadful. a lot of the grey surfaces don't seem to accept portals, and it's unclear which do. it seems like indicators have also been novolumed, which restricts portal placements more. the places that you can actually plae portals however are pretty inconvenient and tedious; and i also managed to shoot a portal on a brick wall out of bounds.

also, the sprites look a little dodgy. i usually use sprites/light_glow02 with a scale of around 3 and an alpha of about 90ish, though these settings can be changed based on where they're used.

all in all, it's a pretty decent looking map but it's not very readable