Tier 5 score is somwhere in the 28000's
And to get dex, as far as I've seen (going through and doing all jobs for points) is gained through the Ninja job
I may just be missing it but I don't think there's a way to completely turn off all sound such as the end music and the eagle and such, its annoying when you're listening to music and all the sudden there's an eagle screeching in the backround
qjamesp, just wait for your line attack, then deploy, keep this up, hit groups of enemis with your aoe, then when the big rush comes, stop deploying and wait, then repeat