Ep1_305.zip by Chris Longden (Clongden@gamespy.com)

Rundown:

e1m1 - Not too bad.
e1m2 - Never liked this level.
e1m3 - Massive improvements to be had with zombie trick.
e1m4 - Was being cautious.
e1m5 - Sucked at the end on this.
e1m6 - Again, was being cautious :)
e1m7 - Reasonable I guess.

As you can see, this is far from optimal, I'd hazard a gess that within a month or two someone (Ilkka?) will have done ep1 inside 2:30. This was my second successful attempt. The first was a 3:11.