How to select an enemy and also let each enemy attack and give xp when dead?

Im working on a turn based game and am currently figuring out how to select an enemy to attack. Once I select an enemy it will be the default target until I change the target. Also, I want each enemy to attack the player and give xp when one of them dies. My game will have multiple characters a player can use so the enemy will choose a target too. I have more but that is all for now, thanks.

I hope this basic turn-based attack will help you a bit :

drive.google.com/open

Good luck !

I can't open the file in Contruct 3.

I made it with Construct 3 r104.

Which error you get when open it ?

Something like failed to open project. Check to see if it is a valid construct 3 file.

can you take a screen shot of failed message?

I open it with Construct 3 :