Once you beat level 50 (or 100) you get a message saying you can start the crucible again at level 50 (or 100)
How do you do that? Once I leave after level 50 I am never able to start where i left off
you have to join the same crucible map you unlocked the checkpoint on. When you do it will give you an option to pay 8 tribute points to resume at which ever checkpoint you have unlocked.
What are the differences between the Arenas? Are there any besides aesthetics? I originally thought you would get a different arena for each difficulty but, after getting 3 different ones in a row last night in Aspirant, I was mistaken.
only difference is the way they look.
one has 3 defense points I think, most have 4.
I personally only play the one with harpy shape in the middle with mainly bronze color scheme, and the dark almost black one with 4 defense points each in a corner of a square. the bronze one has lots of corners and such, so its easier to kite monsters in there. the black one, it is easier to gain bonus there since the map is smaller.
the ice beacon will not work well for neither of those maps because of the blocking shapes, but they are useless anyways. Stormcaller beacons work really nice, you can build it around the square/circle. Most of the time all will work on the same monster, so that makes killing a boss easier. It takes a bit of positioning yourself, though.