Hey. This has to be possible, if you do one side per run. There is a problem with running this game though, and that's the unskippable scenes (most of them are boring too).
Maybe I'm wrong, and the other scenes are skippable, but I know China's introduction isn't...I've tried.
Good luck to anyone who tries this though, it would be fairly interesting to watch (even though I'd find other Command & Conquer games more appealing).
It's been an eternity since I tried the game (and put it down for not pleasing me) but regarding China 6 run:
I know you can just run through that map with your stealth hero, because I've done it on first try. I don't know the exact length of the opening sequence, but 5 minutes seems pretty long. I apologize if that 5 minutes already included that.
Discribing these levels with easy and hard is not exactly right.
The first 6 levels are a breeze, especially the 6th, but I couldn't finish the last one even after 2 weeks. I know I got better in the game at that time. I got faster and everything. Then I got to a person that claimed to have beaten that level and asked him to show me the trick. The trick was NOT to be fast in the beginning, because if you are fast the AI starts sooner with sending you nuclear stuff and better units before you got a chance to build up an army yourself.
After that I dropped the game and never looked at it again.
There would be a lot of people wanting to see any C&C done in a speedrun. See if you can get C&C Generals done because some of the levels are very tricky to do quickly.
Upload a speedrun of one of your C&C videos to fileplanet or something so i can see how to approach it. I'm tempted to do one some day.