The easiest

[Masentaja74]

What is the easiest task of adventure which tasks are 1 and 2 levels of difficulty skull???

[Jamdoggy]

Only Bounty Hunter is a level 1 difficulty (has '1 skull'), but this adventure can only be obtained twice. You get it automatically when you reach Lv 26, and can buy a second one (for 10 fish) in the Merchant Chest.

The only adventure with a difficulty of 2, is Horseback. There is another adventure coming soon, called 'The Lost Skull', which is also a Lv 2 difficulty.

Adventures with a difficulty of 3 are Island of the Pirates, Witch of the Swamp and Dark Priests. Dark Priests is a 2-player adventure, so great if you want to share the burden with someone else. Personally, I think IotP and WotS are both easier than Horseback...