There is no semicolon (;) key in a spanish keyboard.
To write a (;) with a spanish keyboard you have to press "Shift" + "," (comma). This is not registered by your game (not saying it should) but I couln't play your game because it forced me to press a key that doesn't exist in your keyboard.
This is a really important issue you should address.
P.S: Wow, was the spinning and rotating square thingie a character selection screen? I wouldn't guess in a million years.
Loved the "Doomness" of the level. I found myslef exploring every last corner of it and I love that.
Just two things, in the roof of a building there are 3 canister things, careful with those, as the player can get stuck between them.
Also, maybe tone down the fall damage a lil bit, it feels unfair to take damage after falling from a 1 story building in this kind of games. But you know, this is only a suggestion.
