Challenge way to easy

Challenge Slasher Flick has an issue. User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.82 Safari/537.36. This challenge can be solved in one line of code. Is it intended that way? If yes than ok. If not, note that suggested method is actually a solution.

My code:

function slasher(arr, howMany) {
  // it doesn't always pay to be first
  var arr2 = arr.slice(howMany);
  return arr2;
}

slasher([1, 2, 3], 2);

[BKinahan]

Here’s a rough idea of a frankenSplice challenge, feedback appreciated!

// Use slice() and splice() to insert the elements of the first array into the second, starting at index n of the second array.
// Optional objective: Do not mutate the input arrays.

// Solution (with optional objective)
const frankenSplice = (arr1,arr2,n) => {
    let r = arr2.slice();
    for (let i = 0; i<arr1.length; i++){
        r.splice(n+i,0,arr1[i]);
    }
    return r;
};

a = [1,2,3];
b = ["c","d","e","f"];

frankenSplice(a,b,2); // [ 'c', 'd', 1, 2, 3, 'e', 'f' ]
console.log(a); // [ 1, 2, 3 ]
console.log(b); // [ 'c', 'd', 'e', 'f' ] // Input arrays remain intact

[raisedadead]

This is a required challenge, we can have a fair amount of toughness, at least in increment of the previous