What is going on?

Time: 2708ms Passed: 0Failed: 4Exit Code: 1
Test Results:
Fixed_Tests
Basic_Tests
Expected: equal to [8.6667, 6.6667]
Actual: [8.6667, 6.6667]
Random_Tests
Moderate_Values
Expected: equal to [33, 37.3333]
Actual: [33, 37.3333]
High_Values
Expected: equal to [642.333, 895.667]
Actual: [642.333, 895.667]
Huge_Values
Expected: equal to [4697.33, 6422]
Actual: [4697.33, 6422]

Point # 3 doesn't make sense, logically & practically. Just having 2 non-opposite directions adjoining to eachother, doesn't reduce their effects overall unless you have distance in the play.

Then the task explanation needs updation...
if i follow {"NORTH","WEST","SOUTH","EAST"}, i am wasting my energy because it will bring me to the same point. The sequence doesn't matter...

Following test cases seem invalid;

1. Under Fixed_Tests - Input {"NORTH","WEST","SOUTH","EAST"} ; Expected says {"NORTH","WEST","SOUTH","EAST"}, but should be {}
2. Under Random_Tests - Input {"WEST","NORTH","EAST","EAST","EAST","SOUTH","EAST","NORTH","WEST","EAST","SOUTH","SOUTH","SOUTH","EAST","SOUTH","NORTH","WEST"}; Expected says {"WEST", "NORTH", "EAST", "EAST", "EAST", "SOUTH", "EAST", "SOUTH", "SOUTH"}, but should be {EAST", "EAST", "SOUTH", "EAST", "SOUTH"}

Please check other random test cases as well...

Was already marked as spoiler.

Thank you for the pointer.