Alright, this is where the series loses me.
Allen is so desperate to save his friend he gets a super mega desperation powerup...and it makes no sense at all. Who is this guy Allen is supposedly friends with? We've literally never seen him before! Allen has never interacted with him, let alone gotten to be such close friends that he's able to pull new powers out of his ass to try to save him.
It's a shame, this series was pretty interesting, but this one moment of bad writing broke my suspension of disbelief pretty irrevocably.