Editor won't start at all. Linux 13.10

[Poisontrigger]

Hello,

I've been playing Hammerwatch for about a week now. It is very fun!
I have it on steam and it's my brother's game so we use that new family sharing feature on Steam.
I do know for a fact that you have to use the terminal and running a mono command to run the editor.

So this is what I type in the terminal:

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cd /home/samsung-pc-narcisapantaleon1/.local/share/Steam/SteamApps/common/Hammerwatch/editor
Then I type in:

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mono HammerwatchEditor.exe
Then the terminal gives me this:

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The assembly mscorlib.dll was not found or could not be loaded.
It should have been installed in the `/usr/lib/mono/2.0/mscorlib.dll' directory.
I checked that directory only to see that the 2.0 folder was named 4.0
So common sense said that I should just rename the folder then I did the mono command and got this:

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Cannot open assembly 'HammerwatchEditor.exe': No such file or directory.After that I renamed it back to just in case I forget and breaks something.

I tried uninstalling and installing, still the same. So is there something wrong with what I'm inputting? or do I have to move some files around?

I tried searching the problem in Google with no luck, it could be a very simple fix but I'm not that technical savvy with Linux.

Also it is really late at night when I post this so I might fall asleep and unable to respond to replies.

EDIT: Stupid me, It's HammerEditor.exe  I want to facedesk myself right now.
I have fully installed mono.

Now when I try to launch the editor exe I get this error in the terminal:

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Unhandled Exception: System.DllNotFoundException: libSDL2-2.0.so.0
  at (wrapper managed-to-native) SDL2.SDL:SDL_Init (uint)
  at ARPGEditor.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.DllNotFoundException: libSDL2-2.0.so.0
  at (wrapper managed-to-native) SDL2.SDL:SDL_Init (uint)
  at ARPGEditor.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0