Thor and Loki put aside their differences, just as they did against Surtur, to fight Thanos.
Thanos has travelled to Asgard for a rematch but Odin's out of town. The defence of the city falls on the God of Thunder and the God of Mischief. Can they take Thanos down?
If the duo actually fight together and use teamwork, they'd survive for a really long time and put up a good fight. But let's be honest, that's all they would do...this fight can't end any other way than "Thanos wins after a good fight."