My suggestions:
Make the game a little easier.
Make you walk a little faster, feels very slow, it's not like one takes a stroll to the restroom if thay really need to.
Make it be more clear what you will poo in.
Add like an arrow pointing in the direction you need to go.
Make you not be able to poo in something when there is a wall between that and the player, I thought I could poo in a lamp but ended up on the other side of the wall and lost.
Add a way to restart and pause the game when you die.
Otherwise it's a very solid game idea and concept.