Alex single-handedly takes out the ship with the "weapon" on it's way to earth, neutralizes the alien(s) and weapon, forgot to take the alien ship and weapon to be reverse engineered, no wonder humanity is playing catch up.

I like how the way KZfaq made the like button hidden. They really, really, really want you to make some videos unliked. And even if they're unliked nobody knows what the number really is of the unliked. They took that away so nobody would know. Whatever happened to just letting us choose if we like something or not? Why are you so sneaky?

A little predictable and not enough background or world building.

No mention of the other Onlcaves?

They hidden?