lol... As has been said, story isn't its strong point. The combat is, or should've been (I admit I enjoyed it)
And it gets much, much more difficult.
Spoiler: Elizabeth Green and the end-boss Supreme Mutant thingy were agonising! Only figured out how how useful the critical mass devastator (that single straight-line one) was then :x




)
And it gets much, much more difficult. 
