The Mega Buster is an immensely appreciated addition to the series. This title also adds some optional branching paths within the stages. Some contain goodies such as E-tanks and extra lives, while others reward you with entirely new tools for your arsenal. Stumbling upon the Balloon upgrade by complete accident, and gaining the option to utilize it during the final stages during the game to make some platforming challenges easier felt incredibly rewarding.

Mega Man 4 contains both some of the easiest and the toughest Robot Masters I've fought as of yet. Toad Man for example is a complete joke, while Ring Man was a tough nut to crack, even with the weapon he's weak to.
Once again, I feel like the conclusion of Mega Man 4 falls flat due to some incredibly poor boss designs. Wily phase 2 almost made me rage quit until I found out that you can detonate the Drill Bombs on command. This made the fight much easier, but you are still forced to play the waiting game due to the boss's movements being random, and you have to wait for the optimal opportunity to strike if you can't afford to take any hits. Meanwhile, Wily's final phase was so easy that I question why it even was there to begin with.

With the ability to both slide and charge shots, I feel like Mega Man is starting to resemble Mega Man X, which I think is a great thing to see. Experiencing the progression of the series myself is a great time, and I can't wait to see what Mega Man 5 has to offer.