I can't lie.
That stage one looks godawful, especially compared with the Mad Forest that came after. The Church is literally... some dude's photo of a church sanctuary with literally no regard to scaling so you have an altar that's 50 feet tall in a room that clearly doesn't fit inside the building Trevor entered and exited, 3D DS assets are thrown together with 2D SNES, GBA, PSX, and DS assets with no eye or sense for whether they work well together visually (they don't), animated backgrounds have a totally different artistic style from the foreground... and I'm glad I don't have a seizure disorder because those lightning effects are gonna put SOMEONE on the floor.
They went for spectacle, and pushed WAY TOO HARD.
I haven't played the game, but that demo video makes it look amateurish in a very bad not at all charming way.