Currently when your dead you can do nothing! Nothing at all, except check scores, kind boring really. To fix that, let people read their skill trees while dead, so they can read skills and plan what they want to buy, ditto with the citadel. Let them look at items in item shops (in both life and death) with out beeing near them. Both these features help noobs, so they can think of what theyre going to buy, and allow them to play faster.

As far as acheviements go, you should mak elittle popups of progress/ announce it to the current game, much like what tf2 does. Also let people manage their achievemnet items outside the game, for example in the aceviement list. Both of these features would better the acheivement system overall.

Otherwise I love the new beta, love all the new features, especially the new skill trees (like on queen of thorns), I like that direction, so please continue. But I still have sound issues. Sorry I haven't been very active, I'm busy with school... we're building a particle accelerator.