In a mission attack you have to wait 10 minutes after your move to escape the battle otherwise its void attack.
Also trying to escape is a move and can be re attacked if attempted.
If you attack someone and fail to kill and esp you can't fight again in that mission.
You can't esp if your confused, held, or captured.
In an attack if your opponent doesn't post within 20 minutes they pass their turn and it becomes your turn.
One person can disable the 20 minute rule except on a mission but it takes both people to activate it again