The last chinese mission in vanilla Generals. On hardest difficulty.
Untill you manage to get your base up they already have freaking scud storm(hint hint build your War Factory far away since they target that, usually), then you have to deal with the constant harassament from Rocket Buggies and Scud Launchers, don't even want to mention Jarmen Kell that comes in to snipe your Nuke Cannons crew which is kinda the only thing that can defend your base.
Bunkers are useful usually, unless again Karmen Jell comes to snipe your dozers and leave them defendless against scuds and buggies.
The mission itself it's not hardcore, but it's really stressful, untill you manage to take out that damned Scud Storm you will already get hit at least 4 times, then you realise you are out of resources because you need to rebuild your stuff.
I usually point-whore to get the EMP Bomb and use it on defenses(for whatever reason the Tunnel thingies can detect stealthed stuff) and find a good path with Black Lotus to capture their stuff(cheaty but it's really annoying to do it with normal attacks).
Another mission(that was supposed to be hard but thanks to glitches it's easy as pie) would be the last one in TS: Firestorm with the freaking Core Defender, try to take on it without using firestorm wall exploit, any air units or destroying a bridge.
The most stressful missions IMO are the dinosaur ones in C&C1, fucking raptors own everything.
Edited by Seth, 07 October 2015 - 03:19 AM.