Thanks for playing my game, I think it helps to drop down at one of the two ends and time it so you land on an enemy or so if you do miss, then the enemy is moving away to give yourself plenty of time to drop again. The rats behave differently, they won't chase you like the spiders but you can't just rush because there may be snakes below. One final tip: Keep the ball close because if the enemy touches the ball it's pretty much game over, unless it's a snake, in which case just be aware the ball doesn't squash it.