When you first fight adam the clown i suggest you have a lot of guns or else you won't be able to defeat him. whenever he blows fire, throws knives, or blows up ballons that is you chance to shoot him. If you shoot him when he isn't doing those things he will just block with his chainsaws. you can just shoot him when he blows fire. When he throws knives try to shoot faster than he can throw or else you'll fall to the ground and he'll come slash you. When he blows up ballons shoot the balloon which will make him cough for awhile. then start shootong him. Repeat until he is succesfully defeated.