Boom Boom Rocket

Boom Boom Rocket

12 Achievements

200

8-10h

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Honor Roll

Honor Roll

Get an "A" rating for any song on Medium.

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How to unlock the Honor Roll achievement in Boom Boom Rocket - Definitive Guide

From Bizarre Creations regarding scoring: http://www.bizarrecreations.com/article.php?article_id=5286

Basically, in terms of accuracy, the note hit ratings are weighted:

"Perfect": >95%
"Awesome": 80%-95%
"Good": 40%-80%
"OK": 0%-40%
"Missed": 0%

Since the patch, letter grades are solely keyed off of this accuracy weighting scheme of *all* fireworks. 90% is the cutoff for an A. The accuracy rating displayed at the end of the song *excludes* missed notes, however, so, yes, if you miss notes, you will need the displayed accuracy to be correspondingly higher to compensate.

As White Shadows and Sovietaced have mentioned, hit ratio + accuracy = 190% is pretty much the formula. It's actually (very slightly) more lenient than that, due to the math involved in the weighting, but you are almost guaranteed not to notice in practice.*

In any event, you probably should be getting 100% hit ratios regularly on the song on which you plan to aim for an A. Although that's not strictly necessary, I've never come close to the requisite accuracy on a song on which I can't get a 100% hit ratio.

"Smooth Operetta" has the fewest rockets and the slowest tempo, so, in that sense, it's the easiest (and thus, a common recommendation). However, it might be a good idea to run through all of the songs at least once or twice to find out whether you personally find other songs easier, for some reason.

Since score has no effect in and of itself, don't touch the bonus multiplier if it distracts you from getting a lot of "Perfect" hits. If you don't touch the bonus multiplier in "Smooth Operetta" (leaving it at 4x throughout), you will need, as a rough guideline, about 6 million points for an A on Medium.

* Hit ratio and accuracy are actually multiplied, not added, and the result needs to be >=90%. As an example, 95% + 95% = 190%, but 95% * 95% = 90.25%. Again, the difference is so small that you are not likely to be helped by it.
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14 Sep 2009 12:53

5 Comments
i have a question?is there a better rating of A++
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By valtobea on 09 Sep 2012 11:00
@valteoba: No.
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By TKD 117 on 27 Sep 2012 07:50
Something about a patch, if you clear your cache, would that make it any easier?
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By poochz0rz on 01 Dec 2012 20:57
personally i found it easier on Hall of the Mountain Dude. it's a bit faster and tougher to learn, but it seemed like it was easy to keep on timing during the fast parts. i think i got just over 11 million for my A. i don't think 10 million was enough. that's without using the triggers of course.
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By QuickMythril on 16 Mar 2016 08:41
Since Bizzare Creation was closed down long time ago and their website is no longer how it used to be, I will paste here the contents of that article for whoever wants to know how the grading system works exactly:

Grade System
Each firework you detonate is awarded a value from 0 to 1. The closer to 1 you get is the closer to the target line you got (i.e. perfect timing). As far as the grades onscreen go this is how they translate:

Above 0.95 = "perfect"
Above 0.8 = "awesome"
Above 0.4 = "good"
Above 0.0 = "ok"

All the accuracy values you get for each firework over the level are added up and divided by the number of fireworks in the level to give an average accuracy in the range 0 to 1 (and rounded up to the nearest whole number). We then multiply this number by 5 to make the grade value a number between 0 and 5. If you miss a firework then it will count as an accuracy of 0, thus bringing your average accuracy down. That�s all there is to it, your grade is simply your average accuracy. They translate like this:

5 = A
4 = B
3 = C
2 = D
1 = E

Getting star ratings
If greater than 75% of your detonations are Perfects you get an A***.
If greater than 50% of your detonations are Perfects you get an A**.
If greater than 25% of your detonations are Perfects then you get an A*.

Hit Ratio
This is the number of fireworks you detonated divided by the total number of fireworks in the level, multiplied by 100 to give a percentage.

Accuracy
This is not to be confused with the average accuracy which is used to calculate your grade. This is your average accuracy but only on the fireworks you hit. Missing fireworks will not affect your accuracy percentage. Accuracy is all your accuracy values added up divided by the number of fireworks you hit multiplied by 100 to give a percentage.
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By Cosminiion on 07 Jul 2018 17:22
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I find the easiest song to get 100% hit ratio and still get over 90% accuracy is Valkyries Rising, because it has a slow tempo and the notes keep in time with the song.
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24 Jul 2010 16:34

5 Comments
It's really frustrating, I keep getting around 82% accuracy & about 97% hit ratio, it's the accuracy that I'm having trouble with my timing is just a little out.
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By DecisiveGecko on 13 Aug 2010 18:26
Yea, this did take me a good hour or so of practice to get it... and this is supposed to be one of the easyer achievements :s
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By joe jirachi fan on 14 Aug 2010 00:10
Yeah It's pretty easy, but the chords gave me trouble the first time I played
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By Mystic Typh00n on 24 Jan 2011 22:34
HUGE thumbs up from me as after practicing Smooth Operetta extensively, I was only up to 82% accuracy / 98% hit. After a half-dozen runs on Valkyries Rising I managed 88% accuracy / 99 % hit (good enough for A with no title update).
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By G3n3ralG3n0c1dE on 03 Jul 2011 23:46
Valkyries Rising was the one I got this ach on. I just couldn't get the speed right on Smooth Operetta, and once I managed to handle the chords here I had little to no difficulty getting the A. Now, if only I could do the same on Hard...
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By Selly49 on 20 Nov 2011 21:30
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They changed the ranking system after the patch. What you want to shoot for is a 100% hit ratio and at least a 90% accuracy. That will get an A. Or you could get 98% hit ratio with a 92% accuracy. You get the picture. Good Luck.
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13 Nov 2008 00:18

A lot of people find the first song on the list, Smooth Operreta, the easiest for this. Both hit ratio and accuracy influence the grade. Leave the multiplier alone.

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