I Wanna Maker is a precision platformer with a robust level editor and online level sharing, based on I Wanna Be The Guy fangames. here is a guie on how to make an boss.
How to make a boss
1.Make an platform
2.make your boss
3.set up some cannons and make attacks(put anything you want in there)
4.then if the boss get shot or like this(don’t forget the cannon with big coins in there and it follows the player)
5.Don’t forget the coin block and choose your health and make it easy first the harder ones are for the pros
6. then make a invisible cannon with a big portal(enormous)
then script it like this
On Coins Collected(health)
and here you go you made your own boss!