Well, you can do two things:
1. Make up some crazy idea to do it "quickly" that will actually take more time and effort, while giving the semblance of being easier
or
2. Stop being lazy and just do the event!
I don't know what it is you are trying to do, but it seems that you can do it by setting up a different defeat clause in battle conditions... But you need to set it up for each monster group... which would take more time and effort...
Also, you have to be a member in order to download. No thanks.