Warning: I am being really picky feel free to ignore, throw things at the screen, curse me, whatever.
1) Probably not necessary since anyone playing Myth has been playing for a while, but a newbie reading this text...
NOTICE: This plugin requires Project Magma's Patch 1.6 Build 290 or greater. Using earlier patches may cause OOS's or crashes to occur.
...might not know
a) that a 'patch' is actually a version of Myth
b) that 'Patch 1.6 Build 290' is a different (newer) version of myth than the original one they purchased or have on their HD
c) where to download the patch from
d) what OOS means
Not that you need to, but if you wanted to you could make the text a more explanatory by changing it slightly to something like :
NOTICE: This plugin requires Myth II Version 1.6 (Build 290) or greater. Using earlier versions may cause 'Out of Sync' errors or crashes to occur. The most recent version of Myth II should be available for download at
http://projectmagma.net or
http://tain.totalcodex.net.
or of course you could leave out the urls and just mention projectmagma and the tain.
2) There's one line of (at least to me on my windows monitor) really teeny text - though it could be my high res settings. -- note: this is the actual size doing the print-screen windows screen capture - I didn't resize the image.
3) I am not that good with punctuation so am unsure what to suggest, but the sentence
"The Assassin game makes all your Dorfs targets and having reinforcements adds a twist" seems to need some punctuation - I had to read it a couple of times, finally pausing after 'targets' then I (think I) understood what you were saying.
4) In the special thanks section in the first credit the word 'modify' is mispelled 'modfiy'.
just my 2 cents.