A great escape from the real world, I'm not sure why you would collect coins while lava is rising but I love the craziness of it, and dodging bullets while climbing higher makes it more fun for sure. If there were sounds it would make a huge difference. I get my sounds from freesounds, they are very easy to add. Maybe you forgot like me, I tend to add sounds at the end, which is why I had to publish twice and delete one.