So, I used persuasion to enter initially, then killed the three leaders to rescue Halsin. I now have to re-enter but there are just too many goblins, and they slow down my computer attacking in waves to the point it is not quite fun, since, every moment, someone new comes along and they seem to notice wherever I hide.
I have avoided doing cheats and tricks thus far, but am struggling to get past this short of killing some and retreating, to try again, which is not that exiting.
Is there a better strategy to get back inside the temple Am I missing something?