based on the microsite flash game I've got no complaints about ren's voice acting
seems fine, she cute

couple other things im thinkin about for cw2, don't claim the beyond burning lv 270 sac title as soon as you get it, there's like 3 titles total given in cw2, its worth using at least the 2nd title up before popping the beyond burning title, it gives sac and its pretty much the only way to get that higher sac for the higher boss missions + grinding in higher sac areas, you get lv 5 sacred symbols so that's pretty decent for normal grinding
I'm personally going for janus 1 as soon as I get 6th, dusk is way too good, and there's enough frags and erda rewards to grab masteries not long after, might be a bit weaker for some boss missions if u do this way
I'm thinkin about when you should potentially think about janus 10 in challenge world 2, and its only 280+ I believe you would likely want it, len has that ball summon thing which is basically an extra janus ball so you should be fine in hotel, odium, and shangri-la I believe without 10 janus, arteria would be when you would want it and when you likely need to pop that sac title

with m3/m4 on vhiller im now stronk enough to walk in there with full bossing senpaitachi, origin, bind, gene i-frame and shes dead
bossing cd reset change cant come soon enough