Uncover the entire mortiking in Gravedigger

How on earth does one do this and get to the bottom?

Are you more likely to find the mortiking in Hard level?

You don't need to get to the bottom, just uncovering it is enough. Difficult though, because even if you find it, you have to hope there aren't any coffins on it. If it doesn't trigger right away, you can still send the score when you die - you'll only get a couple points, but it should trigger the achievement.

I'm not sure, because I've never personally seen it, but I think its just as likely to encounter it on any level. However, its possible to encounter it and run out of shovel points before uncovering it, so its probably best to run on hard. But that's entirely speculation and I have no firm idea through experience.

thank you. i have rarely seen the mortiking. i will keep trying on hard level,