Introvert.

As for achievements, I'm neutral. I don't think they're a crime against gaming, but I don't love them either. Like many things in life, they can be outright stupid or they can sometimes be interesting.

Hard introvert.

As for achievements, they're an "Eh, whatever". Multiplayer exclusive achievements can bite me, however.

Somewhere in-between on the introvert / extrovert scale. I don't seek group events, nor do I shun them. Maybe introvert-leaning since I prefer group gatherings with people I know instead of strangers - at least those events where personal interaction is intended. For instance, concert is fine: we're not there to strike up a conversation. Wedding where I know only a couple people, not so fine.

Achievements: completely depends on how they're done. A) if they intrude on the gameplay, then I'm not much of a fan. B) if they rely on an external connection and that is the one thing preventing a good game from coming to this store, then I'm against them. C) if it's more than just a <ding!> and instead gives you a small gameplay bonus, then those can be fun and helpful. D) if an achievement is "Made Your Way Past The Tutorial!", then they're quite stupid and pointless. Planned progression in the game doesn't require an external acknowledgement. E) if they're optional - you can turn them off in a menu - then I have little problem with them unless also B)

When was the last time I saw "please"? on a forum? Must be urgent.

I'm an introvert (in the sense that I recharge my batteries when I'm alone and not with people, I don't mind hanging out with a small number of friends in a quiet setting; I avoid parties at all costs but because of being sensitive to sound and not due to a personality trait) and while I'm not a collector of achievements I don't dislike them.

I'll aim for ones I can get without having to invest in them (I like ones I can get as I play, e.g. "kill X enemies" or if achievements mark progress milestones e.g. bosses in Pharaonic, I stay clear of "do a [insert huge number] hit combo").

P.S. You mentioned statistics so, I thought it might help to point out the short answer.

I enjoy being an extrovert by myself.

That's funny and a good glimpse at cultural differences.

I'm more extravert than introvert--not an extreme example but maybe 7.5/10. Achievements mean very little to me in games because they are laid out by someone else. I care more about my own goals, such as loving a game and playing through again with the intention of finding every x, or defeating a certain enemy without any peasants/innocent bystanders getting hurt.

Introvert/hate.

Introvert and as for achievements, I can take them or leave them.

Achievements in a game I want to play - fine.

No achievements in a game I want to play - fine.

Introvert/Love

Never thought about achievements in terms of introversion/extraversion (i.e. showing my e-dick to other players), I just find them fascinating as statistics on the behaviour of other players (i.e. less than 50% of players ever made it past the tutorial of Darkwood). On the other hand, the idea of publishers/developers having access to those same statistics and making decisions based on them ("The majority of players did this and that, so let's cater to this specific aspect and let's get rid of the less popular bits") horrifies me.

I'm quite extrovert and I hate achievements.

I'm on-off introvert and

this.

Ambivert. (That is, I am somewhere in the middle of the spectrum. It turns out that the extroversion/introversion axis is not binary.)

As for achievements, I like them, provided that:
* They are part of the game rather than part of the platform. (In other words, I don't like achievements that are tied to a platform or game client; they should be in the game itself.)
* They are well thought out, and not something everybody would necessarily get. (An achievement that most people would get, like one for dying to the first instant death trap in the game, is OK.)
* Achievements should reward exploration of the game, whether of the game world, or the game mechanics.
* I don't like achievements that require you to avoid aspects of the game. In particular, I don't like achiements that require you to not die or not take damage; I would rather have achievements be earned by dying in a specific way, for example. (Genres where death achievements can work rather well include roguelikes, unfair platformers (like Syobon Action and IWBTG), and adventure games.)
* Not every game needs achievements; the decision as to whether achievements are included in a game should be up to the developers. I would rather have no achievements than have something llke the PS4 version of Undertale, which apparently only has achievements because Sony requires them (I note that the achievements include those for getting up to 4 items, which is going to happen anyway, and achievement for donating enough money, when you can only donate 1 at a time, making them intentionally tedious.)

There are reasons to be against achievements regardless of whether someone tends towards introverted or extroverted. Developers are using achievements as a lazy stand-in for actual gameplay and lore, wake up, wake up, my friends, in nearly all cases you are getting what amounts to less game.

Along the same lines: online multiplayer leaves me cold but LOVE local offline same-screen multiplayer, or DRM-free LAN (meaning no buying extra copies, no phoning home, no registering for third party accounts, no apps, and no mandatory client).

My view isn't based in introversion or extroversion, it's based in remembering what gaming was like before it became a mainstream money-grubbing monstrosity.

We all know you're special ;-)

"introvert" and "I don't really care".