I beat your game. The "deceitful" nature of what is presented on the screen is an interesting concept. Unfortunately, there are three aspects that make it not fun:
1) The randomized controls (especially in the last 3 levels) are extremely frustrating. In level 12, the first button pushed has a 50% chance of killing you instantly. There is (as far as I can tell) no predicting which configuration you start the level with without experimenting.
2) Making the checkpoints every three levels makes the game much more tedious, especially during the last three levels (and when coupled with 1.). If the player beats a level once, why torture him to go through two levels he already beat before he can even try the third?
3) The precision jumping is very hard to control (both due to 1. and to the liberal bounding boxes of the spikes). Making the maximum jump apogee higher or the spike collision boxes smaller would make the game less stressful (but preserve the exploration aspect of the game).

I confess, I eventually used the map text files to determine the structure of the last levels.

Post if you have successfully beat the game!
You'll be known as one of the best Spanish adventures that has ever lived!!!

HAVE FUN!!!