Completing 'Alien:Isolation' on the hardest difficulty and getting all the achievements in the game.

I would say that takes the cake (so far) !

My Proudest Moment was beating Akylios in Rift before the next raid came out at level 50. That was a damn good game back in the day.

Still have fond memories of playing pong against my brother on our new Magnavox Odyssey console in 1973. Still love gaming VR is amazing. Cheers Krusty

Easily the achievement that stirs the most sense of pride is seeing their amazement when getting the kids into PC gaming :-)

My proudest moments were when i bought Panzer Dragon Saga for Sega Saturn, Final Fantasy 7 for PS1 and UFO Enemy Unknown - great times ;)

Proudest moment was fragging an opponent in midair during a big jump with the gauntlet in Quake Live.

My proudest gaming moment was when I 120% completed spyro 1 in spyro reignited

My proudest Moment was when I was able to play Space Quest 1 from Sierra still the old EGA version on DOS 3 back in the Mid to late 80's where me and the neighbors kids (those days without internet to help you get cheats or walkthroughs) were able to finally buy the used spaceship from the salesman but were unable to figure out where to go. We did not know things about bars and drinking beer back at our age. We finally got some more buckazoids and looked at the bar room and figured out talk to the barman and got an order of beer a few times and noticed when we drank we listened to conversations of the other patrons and finally was able to get the location and complete the game after many hours of being stuck in a bar. We were so proud of ourselves that day.

WoW: Shadowlands (retail WoW) : Completing keystone achievement, which is doing all dungeons on mythic +15 difficulty in time with random people.
This is 8 dungeons, which may not seem like much and random people may seem fine but those who play retail WoW know this is no cakewalk whatsoever. It's very time consuming with 90% of the time no reward.
Most people do this within guild for proper communication and have equal geared people with you, but i still enjoy the randomness ehm..random people bring to the group.
You can call me dumb for doing it with pugs (pickup group) and while i failed a dungeon many, many times i had fun aswell if able to joke around some while still doing the job with them.
Good times.

My proudest gaming moment, i guess, was when i completed GTAV on my Intel Core I3 3225 with its integrated graphics (no gpu). It was hard but i did it.

My proudest gaming moment was on Battlefield where I had a full squadron and I was the pilot. It was my first time flying and using a mouse and keyboard to fly. It didn't end well for me and my team...

My proudest moment was when I first finished Prince of Persia (1989) , was on a black/yellow display on a XT PC .

My proudest gaming moment (from what comes to mind) must have been in my early days of Skyrim.

I had decided for my first playthrough that the first time I visit anything I must actively get there and not use any of the carriage services. I would pick a destination based on how many quest objectives I have in that direction and plan my route accordingly.

Somewhere at the relatively early levels of my character (heavy armor sword and shield Orc male), I was heading from Whiterun to Morthal with my companion (probably either Lydia or Ugerth at the time), and then probably planning to go to Solitude.

I was exploring the caves and outposts at the Southwest side of the mountain between Whiterun and Morthal along the way. At some point, a roaming dragon spawned in the general area, just flying around looking for trouble and roaring ominously. I wasn't feeling ready to face it, yet, although I must had defeated a few during the playthrough.

In an attempt to avoid the dragon, I entered the South Cold Rock Pass, which exits on North Cold Rock Pass on the other side of the mountain. I went thought the dungeon rather easily, but when I came through the other side I ended up exactly where the dragon was waiting. What's more is that because of my bad saving habits, I could only reload right at the encounter or too far back and lose a lot of progress.

First, I waited until the dragon landed to fight it melee, but the terrain was a narrow mountain path, with no place for it to land. It just rained fire on us at a distance. After a few deaths, I tried archery but my DPS was too low to be effective. A few more deaths later it hit me. I holstered my weapon and made a run for it and let the dragon chase me (I never looked back, so I don't really know exactly what it was doing). We ended up on a small forest side area at the foot of the mountain where the dragon decided to land. Immediately, I switched to dual wielding and activated the Orc's racial buff (x2 damage dealt and received for 60 seconds, I think). I dispatched the dragon first try and then a foolish frostspider that though it was a good idea to attack me right after I had killed a dragon.

All this may be basic to some hardcore gamers, but felt pretty cool to me. Skyrim sure is buggy (maybe too buggy), but those spontaneous moments of awesomeness it can offer are well worth it.

My proudest moment was beating Fire Emblem 3 Houses on maddening difficulty (Classic and no new game +) without losing any characters.

Surviving first Horde of zombies in Days Gone (PC)...