Roughly every week there is a new set of Event Quests that are brought to Monster Hunter: World to shake things up and add a bit a flavor to the already wide range of hunting and gathering quests spread across Astera. Some of these quests offer increased monster parts or armor spheres, while others offer up unique materials that are the only way to craft certain gear.

These quests cycle every week, so be sure to check back often if a particular quest sounds interesting to you or has that certain reward that you just can't seem to find anywhere else. If you're interested in what quests will be made available each week, you can check out the official schedule here.[game.capcom.com]

If you missed a quest while it was in rotation, you'll have to wait until it comes back around again. Otherwise, your only other option is to wait for a festival to come around. A festival is typically a two-week event where the Gathering Hub is decorated, guild staff and Palicoes are dressed up, and a seasonal meal is up for order. Every past event quest will be active for the duration of the festival, and seasonal armor and layered armors become available, and occasionally pendants too if you own the expansion. Capcom will announce any festivals ahead of time, but generally they come with the seasons or special events. Festivals include the Spring Blossom Fest, Summer Twilight Fest, Autumn Harvest Fest, and Winter Star Fest Festivals, along with the Appreciation Fest at the end of the year just to name a few.

You will need to own the Monster Hunter World: Iceborne expansion in order to access this content.

These quests are only available from the Gathering Hall's Arena Lass, and are on a weekly rotation like the event quests. The Street Fighter themed quests are technically collaboration quests, but since the Arena list is short they might as well go here. I chose to only include Challenge Quests that reward you with items other than arena coins. The others will be excluded from this list.

Seige quests work a little differently than regular 4-man quests. Quests that fall into this category demand the work of every hunter in the Gathering Hub. Split in to several hunting parties, the goal is to complete objectives during the quest to attain rewards. If one party is able to complete an objective, everyone in the hub will get partial credit. You'll get full credit if you also manage to complete the objectives. The quest may take several attempts before actually being completed, allowing you more tries at completing objectives.

With the release of Arch-Tempered Kulve Taroth, Banquet in the Earthen Hall has been retired and replaced with The Fury of El Dorado. The same rewards can still be obtained from the new quest, but there will not be a regular version of Kulve to hunt anymore.

These event quests here were made in collaboration with companies that own the original IP. These give out materials used for fun armor costumes like making your palico look like Mega-Man. Whether or not these quests make it to the PC version is up to Capcom.

Information pulled and compiled from the official Monster Hunter World schedule website and the Monster Hunter World wiki. Feel free to use other sources at your discretion. I merely wanted to add this information to Steam for easy access.