game-editor.com

i was wondering, how can u make ur guy, have extra lives, n make a checkpoint, so when u die, u go bak to it? also, i need to learn how to make a bar it the top, tht will keep track of the lives

Understanding this thread might help you doing what you want.
To increase lives on checkpoint would then be simple with the help of a Collision Event. On Collision with Checkpoint Area > Increase lives

Numerous threads on how to put a Bar :
Moon Defender Tutaurial
Mega man healthbar