this is a quick guide for noobies(i'm a one too)

spawn on the other island go to the chest underground grab the water bucket go up the stairs pour water on the block that jerry's standing on (need good placement, when you are on the stairs you can place the bucket for time save) wait until he dies make sure that you finish the run as soon he respawns two times (when he respawns twice thats the end of the run)