Way. way too hard.
I'm too tired and frustrated to write a proper review, but here it is:
Interesting story, and good idea on the level passwords. Because no one is going to bother playing each and every level.
You made it so everything literally has to be perfect. Dodging the bubba things, for example. You have to time everything to the millisecond in order to dodge their attacks. You can't push rocks unless you're perfectly centred in front of it, if you're in the slightest bit to the left of right, he won't push it. And the last level, oh the last level was pathetic. Quicktime events are supposed to be completable on the first try. This one, however, requires you to memorise each and every button for the entire thing since if you press it a fraction of a second too late, you die. I realised you have to have pressed the button before the sound of the bell stops ringing, and that rings for about half a second. Hopefully that puts it into perspective.
And don't even let me get started on the speed of the game. The character actually walks. It makes the longer levels unbearable since you have to start from the beginning if you die...
And one last thing, why allocate a number of lives? Once they're depleted, you can select continue and it gives you three more. A little pointless. If you had checkpoints in each level, however, then it would be a different story.
1 for the story
1 for the art
That's it.
The gameplay of this completely ruins it. I think I can safely say I've never played a game as bad as this.