Are you really really really good at StarCraft?
Trying these different difficulties of the levels will make it more challenging.
For ALL difficulties NEVER look at a replay of the level until you've won it.
(they don't often work anyway)

*These difficulties rely only on the way you play it, no changes to the actual game
are used.

Easy - Everything normal.
Medium - Keep game speed at 'fastest'.
Hard - You never save (start level again when you lose).
Gosu - You never save, keep game speed at 'fastest'.

This system can obviously be used with any campaign or single-player mission, not just
Total Conquest. The thing with hard and gosu is that you can become frustrated if you have
to start a level again, thus, don't take risks and always be alert. Almost all of you
will have a go at hard or gosu and then decide to play it on medium or easy but what can 
I do?