It got mediocre reviews at the time.
Reception
On review aggregator Rotten Tomatoes, the series holds an approval rating of 67% based on 39 reviews, with an average rating of 6.63/10. The website's critical consensus reads, "A gritty reimagining of the 2011 film, Hanna adds new wrinkles to the mythology and texture to the titular assassin — though the series' long-winded journey may try the patience of viewers who want their violent fables concise." On Metacritic, it has a weighted average score of 56 out of 100, based on 8 critics, indicating "mixed or average reviews".
Nick Allen of RogerEbert.com gave the series a negative review, saying that "it's one of the more maddening examples in recent film adapting, and not just because it’s so similar to its singular 2011 parent, Joe Wright’s Hanna."