For my "Let's Play" challenge:
Ninja Gaiden II: The Dark Sword of Chaos (NES cart/SNES - Trilogy/Unlockable in Xbox NG (SNES version?)/Wii VC/NES Emulator):
Mission 2: Make it through Stages 1-1 through 3-3, using only your sword!
During the levels, you must avoid hitting any of the item orbs.
Since you start each level with a shuriken and 10 Ninja Art points (Which means you can throw the shuriken 2 times), try and avoid pressing up+B which throws them.
You may get hit/die/continue as much as you like. c0ldb33r's rules also apply for this challenge. Challnge ends next Saturday, October 3rd.
Good luck!