Good use of the pre-made art, seems it's been put together quite well. Unfortunately I feel the gameplay doesn't match the quality of the art. I like the idea that you have to manage multiple things and get them to stay in the same area, but without having any way to actually get them to stay, you're more or less just fighting the randomness system which feels frustrating because you have no control whatsoever.
Here's my suggestion - you have objects around the world like barrels and such, right? Add a way for the characters to be able to shift/move them around. For example, moving the barrel to cover one of the exit/entrances so they have less chance of escaping. Something like that - it just needs some way for you to manage the randomness!