Here are some notes adapted from my video descriptions.
Gemini Time
This is a really sweet weapon. It's the Metal Blade reskin of the hack. It can fire in 8 directions, but it gets 5 shots on screen instead of 3. The throwing animation doesn't slow you down at all, which is really nice (it kind of looks like you're slipping on ice, but it's normal walking physics). And if that wasn't enough, you can press select to make a fully controllable invincible twin! It can jump and shoot, and you can recall it by pressing start. Very cool! The twin can't scroll the screen, but if he reaches the edge, it will scroll forward and you'll continue from his location (does the real Mega Man die‽).
Gemini Scroll
Here's where it gets good. If you recall the twin on the exact frame the screen scroll starts, the scroll will initiate but you'll be at your original self's location. This is SUPER broken. It lets us get inside walls super easily and do
birdscroll-like boss entries every time. I'm calling this glitch the Gemini scroll, because apparently I love to name things I didn't discover.
Up+down fun
The floating Metal Blade glitch got even cooler. Now they might have insane vertical speed depending on which 2 or 3 arrows you press. We haven't found a use for it yet, but it's swaggy 😎
Item 2
In v1.0, this Item used to be Beat carrying you around. Now you just walk on air. When active, it gives you constant grounded movement speed, so it can be worthwhile to keep it out even when not using the tricks below.
Zips
You can use the bizzarro magic levitation to get stuck inside the ceiling just like the classic Item 1 and 3 tech from the vanilla game. Seems to be the exact same bug. Additionally, once in the ceiling, you can gain as much height as you want by holding up or right, a feat which would require elaborate setups with two or three Item 1s in vanilla.
You can initiate a zip only by standing halfway inside a ground tile, and getting pushed up into a ceiling that extends fully above you. This only works if a ceiling chunk juts down by at least two tiles. Kind of like setting up a vanilla Item 1 zip if you could only stand on the exact center of the platform.
Bonk warp
If the zips weren't enough for you, there's also an upwarp bug that you can trigger if you bonk the ceiling on the way out of a zip, which potentially allows you to extend it into another ceiling.
Corner boosts
You can levitate into a ceiling corner and get pushed ahead by about 5 pixels. It's barely noticeable as a viewer.
Snake Buster
This weapon covers the entire half (?) of the screen Mega Man is facing. It also lets you shed your skin by pressing select, which increases your speed up to 2 levels. This is a huge speed boost, and is always worth it to do at the start of a level. No exploits with this weapon, we are using it fully as intended!
Refills
Rockman 2: Basic Master has a built-in energy balancer, and collecting refills does not freeze the game. This makes refill strats extremely easy.
