You are going to have to study the tutorials on platformer movements and examples in C2.
If people just hand you a CAPX you are not progressing in your game design skills and will keep having the same questions.
Not to be rude- but you have asked for more examples of things that any game designer should know how to do and it appears you want the forum to build your game for you and that is not helping you.
Play with all the platformer settings until you understand what they do and you can change all those settings to get the effects you want.
Triple jump is just resetting the jump after a timer or on animation finished.