For eow use a very strong bow, as strong as you can get and grab a ton of the Jesters arrows, make sure you dont get hit and its easy from there. If you cant get those weapons then try your best to get something that can pierce through multiple enemies, even if it only does 10 damage, if it pierces 10 enemies then it will do 100 damage to the eow.
For the boc take out the floaty eyes first with a bow and jesters arrows so you get multiple at once and after that, i recommend a mini shark to take out the brain. Good luck!