Old time favorite 1v1 build (kinda redundant nowadays)

CW Build.

Be Fascist.
Bank
Forge
rush out about 5-7 scout and maybe 1 roman to center. If opponent makes a lot of marines, send one scout in front of rest to soak the marines attacks then kill them. This is good for influence gain and wasting opponents resources.
Make a generator (Unless you lost center or need AA in which case make an armory instead)
Create Solar grid and make Mod sakata and rush romans until base is destroyed. (If scouts were destroyed and none left and went for armory then go for manufactory then create AA and phantoms then either go for solar grid or upgrade again for standard spiders.)
I used to use this all of the time and rarely lost a game...but there are quite a few counters for it nowa days.:l

old school

Yeah, and you don't see too many 1v1 games nowadays, as they don't count for statistics.

There are still a lot of 1v1s but only between pros it seems.:L

I like 1v1's, especially when I pit myself against a hard cpu

1v1 against a hard cpu is way too easy I think. I have played on numerous occasions against two Hard CPU's in an attempt to make it hard and it is still easy as hell.:L

start with 2 banks and have ur partner build units but u build a specail operation building and use that to build speacil forces of far snipers and if u want to a hospital or armory or any other building of ur choice but if ur enemy tries a big force send missles

is 2v1 vs hards.

Idk if this was mentioned before, but max rank is rank 10, and i believe that the number of wins you have in total affects the rank you have, as i have a rank 2 with a 70-something win rate.

If is a point system. The more consecutive wins you get, the more points you get after each win. Ranks are achieved via getting a certain amount of points, the amount of games played and win ratio is not so much of a factor.