Well the save isn't that great but I would like to give some suggestions.
First, I would suggest having a clear goal for the player, either directing them somewhere or saying in the description what they should do.
Second, add some props to build some atmosphere, such as wreck buildings, bodies, etc. These can also be used to make it so the player has to follow a certain path.
Third (this goes along with the second), given that this is horror add fog to so the player won't see everything that comes at them.
Last, use the map to your advantage. For example, in this map there's a cave system under one of the islands and could be used to set up a adventure such as escaping the caves or exploring them in search for treasure.
Well that's all the suggestions I got, I'm sure given the effort you can make a great map. One other thing, you might see my own saves and think that they suck, and you'd be right, my suggestions mostly come from maps that I've played in the past.

引用自 A.J.:)：

Well the save isn't that great but I would like to give some suggestions.
First, I would suggest having a clear goal for the player, either directing them somewhere or saying in the description what they should do.
Second, add some props to build some atmosphere, such as wreck buildings, bodies, etc. These can also be used to make it so the player has to follow a certain path.
Third (this goes along with the second), given that this is horror add fog to so the player won't see everything that comes at them.
Last, use the map to your advantage. For example, in this map there's a cave system under one of the islands and could be used to set up a adventure such as escaping the caves or exploring them in search for treasure.
Well that's all the suggestions I got, I'm sure given the effort you can make a great map. One other thing, you might see my own saves and think that they suck, and you'd be right, my suggestions mostly come from maps that I've played in the past.

Thanks for your suggestion. I will see if I can work more on this idea tomorrow and if completed will definitely upload it. Just so you know, most of the bodies can be found in the castle ruins if you didn't see them (although I'm pretty sure you did). And also, I'm sorry if I sound newbie but I have no idea how to add fog to a map

No worries you don't sound like a newbie, the game doesn't tell you what it has anyways. But to add stuff like fog, in the "Entities" tab you can find a section called "Editors" here you can find 3 editors(fog, sun, and sky). When you spawn one of these boxes you want to hold "C" and right click the box and choose edit properties(at this point you can just experiment and try stuff out). But it's important to note that each of these editors have varying effects depending on the map. While fog pretty much works on all maps the sky and sun editors aren't always able to be used.

引用自 A.J.:)：

No worries you don't sound like a newbie, the game doesn't tell you what it has anyways. But to add stuff like fog, in the "Entities" tab you can find a section called "Editors" here you can find 3 editors(fog, sun, and sky). When you spawn one of these boxes you want to hold "C" and right click the box and choose edit properties(at this point you can just experiment and try stuff out). But it's important to note that each of these editors have varying effects depending on the map. While fog pretty much works on all maps the sky and sun editors aren't always able to be used.

Okay thanks, will try to use this tomorrow. Will be releasing the alpha 1.2 as soon as I can