Completely bullshit ending. The dad was trying to protect the kids. They were homeless, starving, and had to drop out of school just to survive. All that and the dad didn’t do a single thing to help them, even in regards to dungeons which he claims to be the expert on.
He didn’t deserve redemption and the kids didn’t need it, he should have crawled back into his hole and died a miserable death from bowel cancer.