[Cypress]

You should count the players that take place in the even and when they die decrease the variable. Then you check if it equals to 1.

pawn Код:

new TotalEvenParticipants;

TotalEvenParticipants++;
// When someone joins

TotalEvenParticipants--; 
//When someone dies

if (TotalEvenParticipants == 1)
//only one left

You should always mind about decreasing the variable during someone disconnects while participating in even.