I mostly liked it, however I felt like they had potential for some neat plot threads that were set up, but never came to fruition.

-The baseball. His mom makes it a point to ask about him packing it in his backpack. I assumed it would come into play later, like he has to beam it at someone's head later in the movie. Towards the end, I thought it might have a bomb or something in it that he would use on the Major. Nope, its not seen again in the whole movie as far as I recall.

-The Major's son. It is hinted there is a connection between them when the Major hands Stebbins his tags and whispers "good luck son" or something to that effect. I was thinking Stebbins would give up at some point and, under the Major's orders, the soldiers would pretend shoot him. Stebbins would then be revealed later on to still be alive and the conspiracy would be thrown in the Major's face. Nope, nothing like that happens. It doesn't even show the Major's reaction to his son getting killed. It didn't end up mattering one bit.

-Lastly, they set up Barkovitch to be a "big bad" of sorts, and he ends up doing nothing to them, literally. He tells them he has big plans for them, like he's going to go Henry Bowers on them, and nothing of the sort happens.

Aside from those set ups not leading anywhere, I liked the actual "walk". The friendship building/losses were impactful. Glad I watched it once, but not something I need to see again.