How do I script a lobby intermission, teleport map, and a last man standing script?

I want to know how that when a certain amount of players enter the game (2 players+) he game begins to count a 10 or 20 second intermission before teleporting them into a map and giving them all a tool/gear. And then at the same time the clock is counting down overhead while the players are fighting and when there is a last man standing or when the clock gets to 0 and the player with the most kills win the match the over head GUI says "(player name) wins the round" and then teleports them back into the lobby and redo the script all over again.