Hiddleston
juggles Loki's clashing motivations (the desire to rule, pent up hatred for Thor and Odin, his
complicated parentage, a lingering love for Asgard he can't quite quell) with deft aplomb, and the screen sings when he finds himself in a reluctant team - up with Thor for a good chunk of
acts two and three, culminating in a ripping action sequence based around invisible portals teleporting combatants from world to world and location to location that might be one of the best superhero action climaxes we've seen in years.