This is the 4522nd most frequent French word.
littéralement
Literally; in a literal sense or manner.
Here, 'littéralement' emphasizes the complete and factual nature of his deserting the group.
Il a littéralement déserté le groupe après l'argument.
He literally deserted the group after the argument.
In this context, 'littéralement' intensifies the idea that the experience was exceptionally enchanting, though it uses 'magical' metaphorically.
Cette expérience était littéralement magique.
This experience was literally magical.
In this case, 'littéralement' is used hyperbolically to express extreme frustration, not a literal death.