Got the Varth clear last night with a score of 6 million
Not much practice went into it. Most stages were only played 2-3 times. After all, you can spam bombs so it's relatively easy. Especially when we're playing the world version, which doesn't have checkpoints.
Despite this, the sheer length of the game still makes it pretty tense in the second half. Varth also has a nice soundtrack and environmental design, as well as beefy explosions, so it's quite fun to play.