It's pretty nice. I admire the minimalistic form and the simple, retro-style graphics. I didn't play with sound on, so I can't comment on that. I actually preferred this demo to the last because of the exclusion of the overworld. It's just too annoying, to me, personally. And, although I like the game, it really does seem like you're trying to be IWBTG on hallucination-inducing drugs. If you just tweaked the controls slightly, and made it a little less... 'flashy', you might have more attention paid to the amazing level design. s still only a demo, so the highest I can give you is a 3/5. Sorry.
Terrible and tedious. No fun, just repetition. I could have more fun smacking my head off a wall. Last badge should be upped to an Endurance Hard, definitely.
A few questions answered:-
How to get 25 large diamonds: Use your Nitros early to dig down, and when you reach the layer where the large diamonds are, turn left so you're going down steadily, and grab as many large diamonds as possible with your mole. This may take more than one attempt.
How to reach over 2600 feet: When you hit around 2500 feet, use a Nitro before the pressure kills you.
This is amazing. The censored content doesn't subtract from the game too much (Sonny 2 much), the gameplay flows smoothly, and it has much more replayability and added content than the first. I wasn't a fan of the first at all, but this has captured my heart. 5/5 + favourite.