The only requirements are getting M&S to 100 Affection.
And playing the Lingerie, Cosplay and their dates.
(For Level 7 ---> 8 getting Suzie to 100 Affection is also required
But, for M&S.
There are around 50+ events each level for either of them, and all of them granting either +5 or +10 affection.
So, it is only required to play the Lingerie, Cosplay and their dates, and maybe around 10/15 of their 50+ events each level.
So, we are not forcing players to play everything (although obviously we would like it if people would do that).
There was no Patch from 0.7.8 to 0.7.9, and we asked people to ask with a clean start when we released the 0.7.9 version because a lot of things changed in terms of making the builds and compressing them.
Everything should be fine if you download the latest complete version.
Edit : And no... before anyone asks... We are not planning on asking people to download the entire game anytime soon again.
If you have the complete 0.7.9 version or the 0.8.0 version, you should be good with downloading the patches in 2022