Broke Game

Someone please help! I broke my entire game. I've spent around 60 hours on this game so far so I really don't want to start again from scratch. I was working on make a collider that would load a new scene and then I went into VS and modified the code, as I thought I was suppose to and my game build would not run. I had a similar issue happen before but I delete the script and everything was ok. This time I deleted the script as well and my game is more broken than ever. I dont know how to upload the console or anything I'm pretty new to Unity and a novice coder so I dont really know what I'm doing. I just love what I've created and really dont want to lose it and have to restart. Here are some examples of the console errors.

Assets/MedievalTownExteriors/Scripts/CharacterMovement.js(46,44): BCE0005: Unknown identifier: 'LoadNewScene'.

Assets/MedievalTownExteriors/Scripts/CharacterMovement.js(51,44): BCE0005: Unknown identifier: 'LoadNewScene'. // both of these are from deleting 'LoadNewScene' script

Error building Player because scripts have compile errors in the editor // guessing this is from some dumb mistake, but how do I find it?

Assertion failed on expression: 'lhs.terrainInstanceHash == rhs.terrainInstanceHash' //then there's like 9 of this error.