There's actually a way to tell when you are going to die (for the most part). If you look at the grass (the tiles with the three lines), some of it is facing in the opposite direction (these are instances where you will / can die).
If it is facing to the right, you are fine walking over it.
If it is facing to the left, you will surely die.
I appreciate you taking the time to play the game and leave a comment. Thanks so much! :)