User blog comment:Bluegear93/Your opinion on Arrival/@comment-743796-20110405130425

The single player combat scenes were definitely tougher than normal, since I played on Veteran... since I've the achievement, I'll simply shoot a few guys here and there in the battle for Object Rho before allowing myself to die... tough facing the YMIR when there are still enemies running around trying to ruin my day, good thing I barricaded myself in an area where I could change direction and cause it to move between two small beams wide enough to use my GPS on it.

As for dialogue and vocal empathy, it could've been done much better, but as was said in another blog, this DLC was done by Bioware's B-Team. Unlike LotSB which was made by the A-Team, they had to resort to another, but still skilled team to work on this.