as i already said, the map is too open and also a bit small. it gives you almost no chance to hide except under the stairs and where the jumppad is.
at least you tried to change the tex a bit.

i dont want to be rude but the map looks like a 10 minute work
but at least for a small 1on1 its fun

actually its a day's work (i'm a slow editor) and i spent hours with hours playtesting it and all i got was positive comments
now i guess thats personal taste. the players have the biggest word on map rating, but mods and long lived SB members decide things here :P
oh and i hope you downloaded the newest version :P

this map wasn't intended to have a lot of cover neither camp spots and that's why its open. I found it suiting for duels and even with 6 players on it the gameplay is still good since everyone used the current cover to evade, noone said there is too little cover.
a lot of jumping and constant movement guarantee your long life in this map :D

The rain sounds like a mix of a bowling alley (pins dropping) and toilet flushing (the thunder is distorted). It's also too loud. I, at least, can hear the distortion of the file.

The gameplay isn't the best from what I'd predict. The particle platforms are creative and cool, but they don't seem practical in such a closed-quarter map. You have no indicator for the jumppads either. There doesn't seem to be any theme going on (besides.. raining) and the map is symmetrical, heavily limiting gameplay and interest.

Even rating it as a small, close-quarter game, I'd have to give it a low rating. It's not interesting to me, nor is it particularly effective in its one creative aspect - the particle platforms. There is a degree of hiding that can go on behind the crates but that's very limited. This is more of an arena than a map.

2/5, consider using the rain sound from Forge.

ok, i'll work some more on this and double the map size adding some more details to show what's going on (even complex is an arena, if you count off the extra walls and cover, i don't see any theme on that map either. its just a plain area within facilities to get fragged in -.-) I'll lower down the volume from the rain sound (it plays a lot more quietly on my machine) to avoid that toilet from being heard xD
Now the jumppad indicators are really a problem since i don't have any suitable texture that fits the map's theme. Even setting up a custom texture won't really help cause you can't pay much attention to the texture underwater. The hole there is, at least, saying all by its self "look at me, i'm a hole and there must be a jumppad below" in anyway i'll see what i can do about it

if you have any more suggestions don't hesitate to tell them. Project is from now: Work in Progress
I'll restart the node when i'm done with the map (to reset the comments to avoid confusion). I'll leave it open for suggestions (avoid telling me the same as the others)