Give it a variable 'Punch'
When 'punch animation' is finished > add 1 to 'punch' variable
When 'punch animation2' is finished > add 1 to 'punch' variable
When 'punch animation3' is finished > add 1 to 'punch' variable
if 'punch' variable is 0 > Play 'punch animation 1'
if 'punch' variable is 1 > Play 'punch animation 2'
if 'punch' variable is 2 > Play 'punch animation 3'
if 'punch' variable is 3 > subtract 3 from 'punch' variable
PUNCH!