It was easy !!
There are many things without explanation, si i dont think its necessary to have a story. Most games have one, but in this case is more that the user imgines its own story, i think. The controls worked ok with me, i used Chome. At first i thought it was so hard, but actually it was not that hard, i just needed to think a bit the next movement, and sometimes just run and wait for the best. The graphics were simple but good. Music cool also, it was sometimes annoying to hear that splosh sound when they died, but thats part of the game.
After some plays i could do all the game really fast, so its not that difficult. I think many people think that after reading the description, or well, who knows !
I liked this game, its not a trascendental favorite, but it was a one day game experience.
Cheers !