Timer question

Hi folks:D

Im working on a game (link) and I want to have a timer. The timer is the numbers on the top right side. The timer shall start on 0 and count 1,2,3 etc (seconds) until the player “dies”. By that I mean gets hit by an enemy or go outside the stage. So the timer will stop when you are brought to frame 2, the “game over” part.

What is a smart way of doing that?

Also… I have an enemy in my library, with it’s identifier name “enemy”. And I want to add a new enemy to the stage every 10 seconds.

Now how can I do this the best way?

thanks and…
peace;)