No WALLHACK, demo is clean. but i saw few names in demo, which will be better to study for wh.
For me some realy fast situations from side sexmachine, but i saw only good position of crosshair before he enter to enemies territory. And i repeat this thing, dd2 you can play with closed eyes, there are place positions, which can be learned. Watch demo good again, and try replay situations in that, and all will say about you, that ure WH. I know many spots in DD2 which i cant use for kill, because im afraid of someone will called me Hacker...