
When I first saw Blaster Master, we only got up the first level boss (the big brain thing) and we didn't realize you were supposed to use grenades to defeat it quickly. But yeah, the game gets pretty difficult fairly quickly in some sections.
I have Blaster Master Zero on the Switch. I haven't played it for long, but I did like what I played so far. From what I have heard, Zero is much more approachable in terms of difficulty.