SureAI

good wishes!
I've killed the giant. Now I'm trying to get another fight ,but cannot. I'm getting two messages: one "from" table behind "arena master" - I cannot get another fight because I've been not finished current one, the second "from" arena gate, when I'm trying to go through - I must get the fight . So,I'm lite confused. Does killing the giant seem the end of this quest ?

The giant is currently the last opponent to fight in the arena. Sometimes the Nehrim Team adds more opponents in future patches.

I can confirm what Shatar said, the giant was the last for me as well and I spoke with Casper about it and he fought the giant last as well, so it's 99% certain that the giant is the "final" fight -- for now. Stay tuned, seems like they released a new German version of Nehrim some day ago, expect the English one "soon". I'm stoked!

Sorry to have to disappoint you, but the latest patchnotes says nothing about new bounty missions or arena fights in the next patch.
Main topic of the patch is a new Zerobilon world and a couple bugfixes, most important being the Charisma fix.

Too bad Perhaps more in the future then, I'd love to see more epic bossfights in the arena like with the giant, but with more & bigger beasts such as perhaps a big shadow-beast of sorts or a fire elemental, that'd be pretty cool.