Doubtlessly the death by too many HP was original, felt like the mechanic itself was a lie. Also, writing a random level generator must have taken some work.
The game felt too much based on luck. There are no hints nor mechanisms to help you finding out what an object will do and you often die just by exploring a few rooms in a direction, without even seeing the ladder/stairs. Instead of generating a new level every time the player dies try reloading the same level until the player finds the ladder, it may require some revisions on the level generator but it would also make the game more interesting - more puzzle less lottery.
As other people pointed out the music is far too short, it quickly gets boring. If you have difficulties writing anything longer just leave the game without a background music, that's fine.