awakened alma is the only boss I truly hate, and the vigoor emperor(first form) is just dumb. the other bosses range from annoying (helicopter, double tanks, nicchae) to actually quite fun (Pa Zuu, Ishtaros, Marbus)
Keep in mind, when i say Ninja Gaiden, i put NGB, NG2, NG3RE here, not just NGB. I have fun with some, but most of them get on my nerves, not that they're too problematic, but they just hit my weak spots.
@Lulu I don't recall kamikaze bosses, right now at least, but kamikaze enemies is a common mechanic of NG2 and NG3RE, they normally try to suicide and take you when they lose a limb.
It's been awhile since I did any MN mode on NG. The only ones I did MN on was NG Xbox, and NG2 Xbox 360. Never attempted 3 in MN.
The only enemies that is troublesome for me is the incendiary throwing ninjas. Every time I run into one I get worried and shit. When that shit lands on block, I have to time the dash to avoid the explosion -and- avoid any encounter. That was gruesome times.
As for bosses, I had trouble against that giant skull vigoor at the bottom level with the lava believe it or not. I was not a big fan of fighting Ishtaros either but I suppose others may have a easier time with her.
NG2 I don't remember which bosses gave me trouble, what I do know is that any enemy adds with explosive shurikens in the boss room is a automatic issue for me.
How was NG3 MN by the way? I thought about attempting it until Razor's Edge came. Thought about doing MN on that instead but all I did was unlock the characters and got bored with the game because I already played vanilla NG3.
In vanilla NG3, MN was dumb, just like the rest of the game. I got sufficiently irritated somewhere around the acid pits and never bothered to finish it.
I actually can't recall whether or not I did Master Ninja in RE. I wouldn't be surprised if, like you, I got bored before then and just never went back.
Oh yeah, the armadillo, i never thought as a kamikaze attack, just that the explosion is a result of him dying.
NG3RE actually has one more difficulty beyond Master Ninja, it is Ultimate Ninja, in general, is a similar challenge to MN on NG2. I have my fair share of problems with it, but NG3RE is still my favorite.
NGblack, there is Doku, and Marbus as good bosses, and then everything else kinda pisses me of on one way or another.
NG2, there is Genshin... and i think he is the only boss i actively like on NG2.
NG3RE bosses range from bland, to somewhat cool, nothing excellent, but nothing makes me mad as the previous games. There are some mini bosses that are terrible though.