Really strong episode, overall. Based on the fact that the creatures that attacked them seemed to be the same type of creatures that showed up last week, this looks to be a recurrent theme this series.
There is definitely some relation to a race that likes to target humans, with the figures used for target practice, and I suspect Art Malik's hologram character will appear again, and seeing as he seems to like to send characters on sadistic contests or challenges, almost like the Hunger Games, he's probably the one who sent out the hunter in the last episode, and is probably behind that guy's sister disappearing.
I can't wait to find out.
I thought the Doctor would snap her fingers to open her TARDIS though.