Whatever happens, no matter what (2,3,4)
I believe the answer is:
in any case
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">whatever happens</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">no matter what</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for in any case that I've seen before include "Besides" , "Where customs officers may search" , "Where a customs officer may search" , "At all events" , "Whatever the facts are, one way or the other" .)