Here’s a speed breakdown
you will hear people talk about “fast” levels and “slow” levels. Remember that you have to get n-3 kanji to guru status to complete each level, where n is the total number of kanji taught in the level.
If a level is “fast” that means that n-3 kanji are taught immediately upon reaching that level. You don’t have to complete any any radicals in order to finish the level
If a level is “slow” it means you start the level without enough kanji unlocked and you have to get enough radicals to guru status in order to have access to enough kanji to level. Slow levels take generally twice as long as fast levels because you have to guru radicals and then guru the unlocked kanji.
Vocabulary is not counted toward level completion, so it has no bearing on speed. In the simplest terms, count how many locked kanji there are when you start a level. Are there 3 or less? Great! it’s a fast level, and you can finish it in roughly half a week if you get it right every time .
Are there 4 or more? No problem! It’s a slow level and will take closer to a full week to complete.
Perfect fast level (no misses)
3+7+24+48 = 3 days and 10 hours
Perfect Slow level (no misses, two waves to guru)
6 days and 20 hours
And of course, remember that missing sets you back on point, so a miss right before guru hurts MUCH more than a miss right out of the gate.
This is more valuable then all the math I threw at you. The gamification of this site is supposed to make the site fun and engaging to help you learn, not to create a sense of races and leaderboards. We are not in competition. Your only opponent is yourself.
Just try to be better than you were yesterday, and keep doing that until better loses meaning