Here are the challenge criteria: 1. The player starts in the upper left corner (beginning of the maze). 2. The player can move up, down, left, and right, but cannot move through walls. 3. There are two monsters placed within the maze. They continuously move up, down, left, and right until they run into a wall, at which point they choose a different direction (up, down, left, or right) 4. There is a timer that starts at 30 and counts down to 0. If it reaches 0 and the player has not won, the player loses. 5. When the player touches a fruit, they "eat" it and gain a point. The fruit disappears. 6. When all fruit have been eaten, a key appears at the maze exit. 7. If the player touches the key before time expires, they win!