The request refers to the 2022 Swedish action thriller Black Crab (Svart krabba). In a post-apocalyptic world ravaged by a civil war, the story follows a desperate mother turned soldier on a suicide mission. The Mission of the Black Crab
On the other hand, Black Crab takes itself way too seriously for a movie about people putting on ice skates to save their country. In The Seats The Philosophical Problems of Black Crab Movie Explained
The team uses ice skates to navigate the treacherous, thin ice while carrying two mysterious canisters. The Journey Across the Ice