***System Requirements:***
Minimize:
o Supported OS: Microsoft Windows XP / Vista / Vista64
o Processor: Pentium 4 3.0GHz
o Memory: 1 GB
o Graphics: 128 MB, Shader model 2.0, ATI 9600, NVidia 6600 or better
o Hard Drive: At least 7.5 GB of free space
o Sound Card: DirectX 9.0c compatible sound card
Recommended:
o Supported OS: Microsoft Windows XP / Vista / Vista64
o Processor: Intel core 2 duo 2.4GHz
o Memory: 1 GB
o Graphics: Shader model 3.0, NVidia 7600, ATI X1600 or better

Link:
http://www.adrive.com/public/14343a516df1f2d4d73d371a9a53e3bf6fe698d9ac9c833f1d7c68d951beb941.html
http://www.adrive.com/public/10577ed5068f07034215be4f34fd36218c8eb319638269cd6765d7056322713e.html
http://www.adrive.com/public/2189ef11a19fe5930c6b420cbbb3068fefa727e3e4e4462fc5e54c9accccb917.html
http://www.adrive.com/public/d1d8606bf990f46446560d194d9956aaa09d9a3041c4da2c6626acfed54b9d09.html

Crack:
http://rapidshare.com/files/164960607/l4dbatcrack.rar

File hổ trợ: Engine.dll
http://rapidshare.com/files/165116884/engine.rar

Bản patch sang tiếng Anh:
(Download về giải nén và bỏ vào thư mục của game)
http://www.adrive.com/public/81f7bab31c9c653849529d3e26fb0a39ccce7abeedc6f4762cae8b36967f05a6.html