You don't need to share your skills, because here are always some nice guys just waiting to have some work
So here's my clue:

The kh movement check if it should make the next strike by if mouse_left==on
and then there's a var/skill1 which controls which strike now will be performed
so you have to make sth. like this:

if(mouse_left==1&&key_W&&now_no_hit_activated)
{
//change now the var into the right kombo for mose_left + w

BTW: now_no_hit_activated means that the player doesn't perform a strike now

Cheers
Omega