And that isn't even a busy mall.
If you make different levels, you could add sensory issues; the person could have to navigate while lights are flashing and/or different loud and soft noises are randomly going off.
You could add comfort item power-ups along the way that give the player back one happiness level (like health items do in a regular video game) or give the player a shield so they can get hit once without losing a level (like Sonic rings or Mario Super Mushrooms).
And that doesn't even take into account the frustration that builds up when life is like this ALL THE TIME.
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You don't need to hide, my friend, for I am just like you.