Usually in apocalypse shows we start off with a big group and 2 people die every episode until only the main cast is left. That was a big cliche this show avoided, one of the characters whom I thought would be main was just killed off in the first episode itself. After that a bit unrealistically but everyone seemed to be managing ok, right until the ending that is, where they just killed off the main character. The worst thing about that was that he died doing nothing, he just gave up. He could have just jumped off the building, he probably would've broken bones, but mostly survived. It just seemed like they wanted a cool shot for the part 1 ending and decided to kill him off with everyone screaming and crying for dramatic effects.
Also, they were not even sure that the spheres were attacking a shelter, like they had never seen the shelter or knew how many people were present there but suddenly after hearing a kid's speech they decided it worth risking their lives for.
1. While the students left the school they took 2 trucks, which caused the whole 1 group got abandoned and the other group came to rescue them thingy. But while going back to the shelter after the rescue, they seemed to be managing just fine within a single truck(unless it was a bigger truck, but it didn't seem like it). So why would they divide into 2 trucks to begin with.
2. The teacher lived outside the school even though the whole area was evacuated and was swarming with the spheres.
3. But the biggest plot hole according to me was that all their parents are apparently just chilling in the shelters while the high school kids are dying to protect them. Shouldn't it be the opposite, shouldn't adult civilians be drafted for the military and students protected in the shelters....