After 2 years, these MMO players have become the first 5-man team to max their accounts in one of the genre's few co-op modes

gamesradar.com:

Old School RuneScape diehards have set yet another impressive MMO record, with a gang of players becoming the first five-man team to max out all of their accounts in the game's Group Ironman mode, almost two years after the mode's release.

Reddit user and team member iDrunk announced the achievement on the Old School RuneScape subreddit this week. The team in question, 4guys1denny, also includes: Dennys Dad, Dennys Fat, LostAfterMax, and *sigh* Boobs Mom. All five players are now total level 2,277, meaning they've reached the max level of 99 in all of the MMO's 23 skills. Group Ironman was added to OSRS on October 6, 2021, meaning this team's beaten the two-year mark by just days. 

The official Group Ironman hiscores prove their achievement, and also confirm the group's Prestige status, meaning all five members have been in it from day one with no roster changes. New members can join OSRS Ironman groups after they're formed, but they won't be Prestiged and, as an account integrity measure, will face trade limitations for some time. 

This is not the first Group Ironman team in all of OSRS to max, only the first five-player group. At the time of writing, six two-man teams have maxed along with one three-man. No four-player groups have maxed yet, and the second-place five-player group currently has four maxed members and one player who's 55 levels behind and presumably being hounded on a regular basis. 

OSRS is one of the few MMOs with an official Ironman mode which prevents you from trading with other players in any way. You have to earn and obtain all of your items yourself, completely changing the way you approach skills and combat, and requiring you to experience a wider range of content instead of focusing on whatever