You're walking in the dark, you can't see a thing. Luckily you saw your surroundings in a flash of light, so you are now using your memo to avoid all the obstacles. Not just your memo, but also your agility and skills, because you need to be able to jump well (and think in advance) to avoid the spikes. Build bridges with the blocks you can find all around, and make your way from one challenging level to the next.
A or left arrow = left, D or right arrow = right.