Reduced fatigue, no fatigue from gene mods and officers, no will loss on critical wounds, better rookie stats, less repair time on interceptors and a little less on items repaired in repair bay and more (some speed ups to X stuff, knocking down some prices and increasing loot, a little, very little nerf to some aliens, no grenades on Mutons & Floaters [hopefully - if it works as intended])...
I made it for my friend '2scared2playLW' since I play on different modified version of LW. Basically makes the game more fair so you're less likely to save scum, lose soldiers in 1 hit and other BS. Ia recommend playing with these Second Wave options: Save Scum, Bronzeman (if Ironman), Commander's Choice, Perfect Information and United Humanity if you want no Exalt (extra easy).

To install drop the 2 files from the zip into User>Documents>My Games> xcom enemy within>xcomgame>Config
Requires Long War installation first http://www.nexusmods.com/xcom/mods/88/?tab=2&navtag=http%3A%2F%2Fwww.nexusmods.com%2Fxcom%2Fajax%2Fmodfiles%2F%3Fid%3D88&pUp=1