Finally beated the game after just 3 days.
Anyway despite all the negative posts and reviews, the game is as good as Aliens VS Predator 2010, great storyline set in middle of Aliens and Alien 3. Surprised to see Hicks alive and the end came with a cliffhanger after Bishop said "We got everything" after downloaded data from a damaged Bishop clone.
It made me wondered why Gearbox changed the graphics artworks and models in the final version. They should leave it alone from the demo and built from here to the final, not build from scratch! The graphics and models from the demo was much better than the final version.
I hope to see a sequel of Colonial Marines in future to take down Weyland-Yutani Corp.
Think I will start the game again with Ultimate Badass difficulity and get every audio logs, dog tags and legendary weapons.
Intel Core i7 3770K, Corsair H80 liquid cooler with Noctua S12-1200 fan, ASUS P8Z77V with UEFI 2003, 16GB Samsung Green 30nm DDR3-RAM, Pioneer DVR-217DBK 22x DVD-RW, Corsair AX850 PSU, Western Digital 2TB SATA3 hard drive, CanonScan LiDE 210 scanner, Microsoft Internet Keyboard, ASDA Wheel Mouse Optical, 32inch Sharp LC32LE600 LED TV, EVGA Geforce GTX 670 SC 4GB with Geforce 326.80 driver, 30Mb broadband Virgin Media VMDG480 Super Hub, Aspire Xplorer Midi Tower, Windows 8.1 Pro 64bit.