While I do think Huddleston is a great actor, I didn't like the way he was either directed, or chose to portray Loki all that much here. A good example were his little mannerisms when he gets a fridge. I can imagine it may have been chosen to show how out of his comfort zone he was (or just the tone they wanted), it 'lessened' him a bit too much to me.
Having said that, I thought he was absolutely fantastic in the emotional scenes.
Overall, enjoyed him well enough.