Beginner tips: Hold ctrl to get through dialogue quickly. To run from fights you need to hold esc. An easy way of selecting abilities in battle without having to waste a second to do so is by holding down the direction of the ability on the menu as the meter for the character you are wanting to use one with is about to be ready. You are able to run from the bubble man and dark man fights (not in 100%)

Good Ending: When you start you have to fight the delivery ghost at the door. If you don't one shot him it is best to restart the run as it takes up more time than needed if you use two.

Make sure that after you leave the house you DO NOT step off the path until the police officer gives you the path pass.

Run from every battle.

During boss battles, use zero's slam dunk to do as much damage as possible.

In either the mother fight or mother second form fight your health will most likely get really low. You should still manage to beat her without healing.

Bad Ending: (Recommended if you are starting out) You don't have to stay on the path.

After the pharaoh man fight, when you leave the pyramid you should be stopped by the officer. You will be arrested for stepping off the path and achieve the bad ending.

100%: Play through just like you would if you were just getting the good ending but do not run away from the bubble man fight and the dark man fight.

After you beat the slash men and regroup with megaman go back into the cave and go down through the entrance. You should see a ladder, go up and you will find the yellow devil. He is really easy as he does not attack but he takes a lot of hits to kill. After defeating him he gives megaman the multipasta skill.

After the ghosts take over, on the way to the castle there is a path that ends at an intersection. Go across that path and you will find guts man. He will panic and say he can't find his money so you give him $500. This unlocks zero's split ball ability.

Then all you have to do is beat the game.