Perdutamente is an adverb that translates to "desperately" or "madly." It's a strong, evocative word that suggests an intense, all-consuming state of being or emotion.
In Achille Lauro's song, it's used to describe a profound sense of being lost or completely immersed, as in "Perdutamente, siamo in mare aperto" (Desperately, we are in the open sea). This word perfectly captures the song's theme of reckless abandon and intense emotion, making it both memorable and impactful.
Achille Lauro spends the verses watching other people from a distance. "Ho visto un uomo morire per gli altri, eh" [I've seen a man die for other people], "Persone passano senza guardarsi" [people walk past without looking at each other], and then the flat, tired verdict: "Ma che vita stupida" [what a stupid life]. Later he adds "Ragazzi in strada a morire per farsi" [kids out on the street dying to get high]. Nobody in this song is a villain. They are all just slightly stuck, and he says so without pitying any of them.
Then the chorus asks for the end of the world and treats it as a night out. "E se bastasse una notte, sì, per farci sparire" [and what if one night were enough to make us disappear], wiped out "come un meteorite" [like a meteorite], and his reaction is not fear but "godersi l'impatto" [to enjoy the impact]. There is a genuinely funny line in there: "Se si incendia lo spazio, amore, abbassa il tettino" [if space catches fire, love, put the roof down], which is a convertible driving through the apocalypse. The title does the heavy lifting. Perdutamente means hopelessly, the adverb Italians save for being madly in love, and here it gets attached to being lost at sea and to the sun coming up anyway. If we are nothing to God, he decides, then at least be "un fuoco d'artificio" [a firework].