UPDATE #3:
By: 'skychase2rebirth'
Level: Stockyard Escape.
Download:
http://www.mediafire.com/?0x3s2qupqblpeu8
Level: RuptureFarms II - Zulags 1 (partially), 2 and 3 (complete).
Difficulty: (presumably) Hard.
Download:
http://www.mediafire.com/?zziralpab3ycr5t
Information: "always keep grenades if you can".
By: 'gishygleb'
Level: Paramonian Nests.
Difficulty: Hard.
Download:
http://letitbit.net/download/37515.3...29/f4.rar.html
Information: "Very quick level (1 hour of making)".