Guitar Hero: Warriors of Rock

Just play expert bass on Nickelback - How you remind me. One of the bass challenges requires you to upstrum and the other is for the high score. There are no tricky parts in the song, so if you do quite well and upstrum the whole song 20g will be yours.
important: Restart the song if you made a mistake because You MUST earn the diamonds on the first finish of the song.

I have found that the two diamond medals you need, HAVE to be earned for the -first- time, at the -same- time.

So don't get one first, come back later for the other. It will NOT work. Even if you get them both again.

Pick an easy song with easy challenges. Challenge the one you need to keep an eye on, because if you near the end of the song and you earned one already, you'll have to restart.

Again (I can't stress this enough): you'll get the achievement only if you earn two NEW diamond medals. (You need to get career stars for them.)


Good songs for this are:
How you remind me (as suggested by bramstroker)
Unskinny Bop (I used this)

One song I have not seen recommended is "Losing my religion" by "R.E.M", If of course you have never won a diamond medal on this song then do this on MEDIUM BASS, and get 100%. If you do so you will get 2 diamond medals, the high score medal (helps if you use star power as much as possible) and also Note streak medal, You'll need 109,500 for the high score diamond medal and a 145 note streak for the diamond streak medal and it's easily won on you're way to the high score medal. Hope this helps anyone stuck with this achievement as it's a lot easier alternative than doing any song on hard or expert if you're not that experienced at the game.

I used "Black Horse and The Cherry Tree" from Band Hero for this one. On Expert Bass there are only 42 notes, and 2 challenges for a 14 note streak and a high score which you'll easily get if you can FC the song or even if you miss a note. This is a pretty easy song even if you're not used to playing Expert.

READ the *Note* first!! The main solution is only IF you fail with that. Also...your gonna vote negatively please have the guts to comment why..

Ok first off nothing to take away to these guides and stuff but if you can't play guitar on expert or even medium like me, then this solution is defiantly for you. Ok 2ndly the one downside with this solution is you will have to purchase a DLC song, but if you badly want the cheeve it's good as yours if you do this, and there is only 3 simple steps.

*Note* You can also get this cheeve by singing the song Chemical Warfare by Slayer on expert as long as you hit the few notes that require pitch but it can be done. Other than that no other song can with speaking words only have 2 challenges only high score.

Step 1. - Buy the song 100 Little Curses by Street Sweeper Social Club (160 MS points)

Step 2. - Get a mic and put the song on expert.

Step 3. - Either just put the mic up to the fan with auto star power on or actually sing/yell the song the whole time it's pretty easy.

The boom you have the achievement...the entire song is only just words no variation of tune. So if you suck at guitar like me here you go. Enjoy.

Unfortunately I messed up on both How You Remind Me and Unskinny Bop. Looking for other options, I found one in my DLC.

If you have purchased the song Jet (by Wings), this is very easy. It has two challenges for Bass Guitar (highscore and a note streak of around 85) both which are very easy on Expert and will get you 2 diamonds long before the end (at least for me it worked).

To recap: Jet by Wings on Bass at Expert difficulty

However, before purchasing any songs, I'd advise How You Remind Me, just like Wulf684 said. My method works if you somehow screw up Nickleback (like I did)

If you have the "Neversoft Thanks the Fans track pack" for GH5/GHWOR and if you have troubles playing on medium or expert, you can choose Lemon Frosting by Bunny Knutson on Bass EASY. That's what I did by accident while playing for the 2000 stars achievements. Medals for that song are: High score (38 600 for diamond) and Note streak (88 for diamond) and I did 44 174 with 192 streak (100%).

Warning: before going for that achievement whatever the song and difficulty you choose, I advise you to copy your save just in case you make mistakes. That way you don't have to pause the game to check your medals.