I'm getting low on energy very quickly. Howmuch energy do you have?
30. I use zealous daggers with +5e, I never have any energy issues unless I get unlucky and stop critting for a while.
You should be able to. You can also use Spoil Victor for it( As Thom before you says in his post ). Maby even better for the drops, to kill them one by one. I use to do it myself that way.