Nuzlocke Challenge

Has anyone done any of the following when playing a Pokemon game?

-Not use Pokemon Centers
-Battle only in "set" mode
-Capture only one Pokemon per route/area
-When a Pokemon faints, NEVER USE IT AGAIN (deposit it forever or release it)

I'm doing all of the above(!) in my current play through of Soul Silver. I'm thinking of scratching the first rule, as I am running out of PP. I treated myself to a level 1 Dratini from my Platinum Version. I'll keep everyone posted here as to how it turns out. Wish me luck!