Here is the full list of all 4 Touhou Crisis achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Finished 1 game online, and you didn't even need any quarters!
Congrats for winning as Reimu! Y'see, it's a pun on the Remington shotgun but we add "Reimu" to it, also the 890 when read separately in Japanese sounds like Hakurei. It's a reference to a Youtube video by the same name, give it a watch
Congrats for winning as Marisa! Y'see it's a reference to the M4 carbine rifle but then we sneak in "leet" speak to spell "Magic". Yeah I spent a lot of time on this
That's what you get for trying to take pot shots while she's stopping time! And yes, this is a Jojo reference