I think Metroid is harder than most series right now. Some bosses, especially in MP2 are a pain in the ass.

I would say pretty hard as a series but Prime 3 is definitely the easiest, i rarely saw the death screen until i started playing it on hypermode. Even though the controls are different, having played the other two makes you more tuned in to boss tactics.

Be sure you experiment with weapon combos on the smaller enemies too. Combinations of rapid fire, charge beam, missiles/ice missiles etc. Some enemies you could spend a minute or more trying to kill on hypermode if you just blast away but with the right weapon selection you can knock them over in 10-15 seconds.

I think the Prime series is hard, especially Echoes. I enjoyed the challenge, though.

I wouldn't say it's really hard but the boss battles In MP2 were tough ..and Omega pirate in MP1 is a bitch on hard

Yes its a hard serie. I never beaten the first Metroid Prime on NGC...

I rather 2D Metroids.

Well I just beat Prime 1 and 2 on hard a week or so ago and I have to say I don't find them too hard. (besides a few bosses)
Prime 1 - A good challenge but not too hard.
Prime 2 - Boost Guardian >_Prime 3 - From what I remember none of the bosses were too hard even on hypermode all were pretty standard.

Then again I've played through the Prime games many times so I know the bosses like the back of my hand. lol

i never finished the first mp. the final boss beats me every time.
i never finished the second mp. i'm not stuck, but i stopped playing (dont know why). I was pretty far and i was supposed to find keys (as far as i remember) to go to the final section.

i never played mp 3, (bought it on launch date) which is a shame.
i will start playing it this weekend or after i finished zack and wiki.

damn, i do have a problem with games. i buy a lot of them, but i dont have time to play them.

Prime - Very hard. Especially if you miss the charge beam like I did my first time playing. (Don't ask)

Prime 2 - The only one I cleared. Even more difficult that the first one. Especially early on. The only one I cleared 100% scans/items. On normal and hard. That was a bitch.

Prime 3 - Easy even on the Veteran setting (I killed it on that setting). It's a bitch on Hyper Mode though but can still be easily crushed due to the Hyper Beam Corruption mode.

the metroid prime games are easy. the hardest boss is probably dark samus on hyper mode. I killed rundas in 20 seconds on hypermode lol

I just started playing metroid games and my first one was Metroid fusion.

the game wasnt hard it was easy and really fun!! i say you should play the 2d ones!

i finished metroid zero mission just yesterday and it was awesome!!

SPOILER ALERT:

The zero suit samus bit was awesome especially sneaking and running around in the space pirate mother ship!

Super metroid and the first Metroid are Reeeeaaaaaly HARD!!

Metroid prime games:
I only played 3 but never finished it not cos it was too hard! cos damn cd was scratched up but i plan on buying metroid trilogy...

Metroid other M:
I think the game will be really fun since this time it isnt first person! it looks really good cant wait til it comes out!