It's is a tiny game, but extremely difficulty. If you can put the challenge in the game, you have warn the Player what's is have, because I think it's have more levels and have save points more forward.
The game have more time to gameplay, but it's not work much well, because the Player is frustrate a lot without knowing.
The concept is good, the movemnt is work very well and the art is good too. If have more level, life and save points it's is become much better.
Take a look in game "I wanna be the guy" or "I wanna be the boshy" or hack rooms of super mario world (super sheffy world 2, for example) it's difficulty but it's is previous knowledge :).
I like this type of game :), plataform and some difficulty.