Hi, firstable, thank you for your comment, we really appreciate it.
we were expecting, this kind of feedback. We were thinking about checkpoints/saves, but we decided, that we won't be making them at the end :). But from time to time, it's always good to have some challange. Even if the game might be hard sometimes, I think it's always good, that it evokes at least some kind of feeling in player, wheater its good or not :)