gmod - Solitary defence

Marth defending (probably his) castle from a horde of something you can't see.
I shall state now that aside from SSBB and a bit of second-hand info, I know nothing about Marth.
Chances are, I'll head of to Wikipedia for some reasearch.
Also, now I have my own copy of Brawl... but no Wii Console.

Marth and his longsword (named Falchion) (c) Nintendo
Map on toybox
Screenshot (c) me