<<< See the Avatar, that's not there for nothing
I worked my way to Deadly the hard way on both Commodore 64 and Amiga.
The secret missions are there in the Amiga version of Elite, there is also an Elite Plus version if you look around the TOSEC archives. The tribbles are there too...if I recall correctly.
If you want a really flash PC version. check out a program called Oolite, think Elite with proper 3D graphics and you get the idea...