Tasks exclusive to yeast feast (6280):

Defeat TzTok-Jad once:80
Equip a Fire Cape :80
Smith 50 of any metal weapon or armour piece:80
Smith 100 of any metal weapon or armour piece:80
Equip a full set of Orikalkum armour :80
Complete an Elite clue scroll :80
Reach level 80 in any skill :80
Complete New Foundations :30
Churn some butter :30
Enter the Cooks' Guild :30
Gather and convert 50 bright memories :30
Reach at least level 5 in all non-elite skills:30
Reach at least level 10 in all non-elite skills:30
Pickpocket anyone 200 times:30
Plant seeds in any farming patch 100 times:30
Steal some Wine of Zamorak from the Captured Temple , south of Goblin Village:30
Defeat a Fire Giant in Kandarin:30
Use an Elven Teleport Crystal :30
Complete the easy Karamja Diary:30
Mine a drakolith rock in the Tai Bwo Wannai mine:30
Defeat 10 Fetid Zombies :30
Defeat 20 Bound Skeletons :30
Complete Haunted Mine :30
Clean 200 of any herb:30
Complete 25 laps of any Agility course:30
Make 30 Prayer Potions :30
Make a 4-dose Potion:30
Harvest 5 Grimy Ranarr :30
Fletch 100 Iron bolts :30
Open 20 Igneous Geodes :30
Bury some Baby Dragon bones :30
Bury 5 Dragon bones :30
Craft 100 runes:30
Equip a full set of Adamant armour :30
Equip any elemental battlestaff :30
Complete a Medium clue scroll:30
Collect 5 unique items for the Medium clue rewards collection log :30
Collect 10 unique items for the Medium clue rewards collection log :30
Plant seeds in any farming patch 10 times:10
Complete the Gnome Stronghold Agility Course :10
Complete a Frozen floor in Daemonheim :10
Pass through the western gate of Port Phasmatys :10
Cast Bloom using a blessed sickle or the Ivandis flail in Mort Myre Swamp :10
Use an ectophial to return to Port Phasmatys:10
Visit Dragontooth Island by boat:10
Drink a Strength Potion :10
Make some Bread :10

Tasks exclusive to  circl (5030):

Collect 10 unique items for the Hard clue rewards collection log:80
Hunt a yellow wizard in the Runespan and give them some items:30
Mine 200 soft clay in Prifddinas:30
Defeat the King Black Dragon once:30
Visit the Everlight dig site :30
Restore 500 Prayer Points at an Altar at once:30
Complete a Hard clue scroll:30
Collect 5 unique items for the Hard clue rewards collection log :30
Siphon from a fire essling in the Runespan :10
Defeat a greater demon on Karamja :10
Offer 25 bones of any kind to an altar:10
Scatter 25 ashes of any kind:10