Engine Knock and Oil Pressure Warning Light

I have a 98 honda civic ex manual trans… Today I was driving on the highway going about 65mph in 4th gear with the RPMs at around 4000 to 5000 until i got to 75mph then i would put it into 5th gear. I noticed it was not picking up speed like it usually would. Suddenly the oil pressure light flashed for second then the radiator blew and leaked on the entire engine. After that any time i accelerated above 2000 RPM it would make a knocking noise from the engine along with the oil light flickering with it. I replaced the radiator right away but the the knock and warning light are still there. I appreciate any help!

Stick a fork in it, it's done.