In 1944, a company of Nazis flee across northern Finland towards the Norwegian border, burning anything they encounter. On the way, they relieve a passing prospector of his saddle bags of newly excavated gold nuggets, unaware that he is Aatami Korpi (Jorma Tommila) a veteran of the Winter War and a fearsome commando. Armed with little more than a pickaxe and legendary Finnish sisu (which is supposedly untranslatable), Korpi hounds the Nazis across the unforgiving terrain.

Director Jalmari Helander’s previous Big Game was an outrageous action movie featuring Samuel L. Jackson as the US president, on the run in Lapland after terrorists bring down Air Force One, and forced to rely on the ingenuity of a teenage Finnish woodsman. But as I said at the time, it was a film about a “Finland of the mind”, shot overseas amid distinctly un-Finnish mountains as if he had no faith in the cinematic appeal of his homeland.

In Sisu, which seems liable to be released in many territories under the title Immortal, Helander returns to gory Hollywood-influenced action. One suspects there is an image board somewhere in his office, crowded with several iconic set pieces from the Indiana Jones films, a few stills from Mad Max: Fury Road and First Blood, and a bunch of old-school war movies and quite possibly the Norwegian Ofelas (a.k.a. Pathfinder). But he also clings to the real Lapland as his location, with Kjell Lagerroos’ cinematography pausing for long, loving vistas of the fells around Utsjoki and Inari, awash with gorgeous autumn colours, in what must have been a punishing shoot to seize each day’s limited light.

As Korpi, leading man Jorma Tommila barely has two lines in the whole film, instead carrying the whole thing through sheer force of grit and will. He is aided by a supporting cast of sufficiently dastardly Nazis (largely played by Finnish actors, but speaking English to help all those foreign cinema-goers, and dying in a number of increasingly visceral and gory ways), some plucky Finnish women, the obligatory dog in danger, and a score by Juri Seppä and Tuomas Wäinölä that steals the high-noon knells of many a Western, and ominous droning that recalls Mongolian throat-singing.

There are some corner-cutting VFX to add widescreen whistles and bells, including shots of Ivalo in flames and a war-torn Helsinki, but aside from Tommila himself and his increasingly ludicrous refusal to give up, the real star is Lapland, which Helander has chronicled before in his breakout Rare Exports, but never with quite so much loving attention.

As for “sisu” itself, the opening credits have a go at defining it: ““SISU on hampaat irvessä pystyyn nostettu nyrkki. Se on sitkeää uhmakkuutta kohtalon edessä. SISU syttyy, kun viimeinenkin toivonkipinä on hiipunut.” Sisu is when you raise your fist with your teeth clenched. It is stubborn defiance in the face of fate. Sisu lights up when the last spark of hope has faded.

Jonathan Clements is the author of A Short History of Finland. Sisu is what keeps him going back to try terrible Finnish Asian-fusion buffets.