This is a movie about Apex Predators called reapers who turn out to be machines & not organics, who have wiped out 95 percent of Earth's population.The humans have predatory intent on going out to confront the reapers. All the humans have to do is stay above 8, 000 feet & the APs are unable or unwilling to prey on them. The band of 3 indicate it's a suicide mission, however I don't see what's @ stake that the humans would feel the need to die over. Not everybody can stay above 8,000 feet, either in ability (the mountainous altitude isn't there), or supply chain challenges (implied, but not--the trio have there neccessities). The scene wherein the lead male actor fires a bullet into some propane tanks, they explode, & the blast sends one of the APs clear out the window & to it's near death, is my favorite, despite the mystery of how the AP took the stairs, as big as it is & not being bi-pedal. The main male lead is my favorite character, not because he's all that, as a character, but because his two partners in the trio are NOT all that, & he's an AList actor. There's a lack of believability, as in how real people sometimes act, as to what or who's @ stake, & that the human race has been, is, & will be increasingly survival minded & logical, two stars off. Suicide usually implies strapping bombs to one's body, however this is ecocide, under a different definition, key word eco. Some survival minded humans would remain above 8,000 feet & find a way to supply themselves--humans are both genius & ingenious. If a suicide mission ,why does the trio run upon sight of the reapers? Never seen one? Change of heart @ the last minute? Why aren't the characters made to take them on with inferior weapons & get slaughtered already? The ending with mysterious explosions here & there (as to what or who exploded), is a mystery, wrapped in an enigma, inside a puzzlebox. Magic bullets? While a mystery is loved in a story by some, not all do. This mystery wasn't acceptable.