Unsullied should be excellent in sword n board fighting, there's no excuse for it. They are hoplites who have done nothing their whole life but get their dicks cut off and trained using spear, sword and shield and they only have one dick.
There's also no excuse for Daenarys to be in that collesium without much protection.
They could have set it up with a few lines from Tyrion about, "If Barristan were here he would have never let her be so exposed.". I mean really her posse is Tyrion, Hizzy, Missandei, Grey Worm and her side squeeze, none of them are liable to think tactically about her protection like Jorah and Barristan, much less push past her naivete when forcing her to have a hundred unsullied around her at all times.
There's also no excuse for Daenarys to be in that collesium without much protection.
They could have set it up with a few lines from Tyrion about, "If Barristan were here he would have never let her be so exposed.". I mean really her posse is Tyrion, Hizzy, Missandei, Grey Worm and her side squeeze, none of them are liable to think tactically about her protection like Jorah and Barristan, much less push past her naivete when forcing her to have a hundred unsullied around her at all times.