Achievements count - 8
Time to 100% - 12 hours (If you have almost all needed resources after beating main game) and ~60 days
Bugged achievements - No

Accessing DLC: Max out relationships with all bears. Some of them will be replaced with new ones after speaking with bears from main game on the next day.

Prismatic Pal
Pet the rainbow cat on multiple days: 3


You will get rainbow cat after purchasing DLC by mail. Place cat inside your house and pet him 3 days.

Welcomer
Meet new neighbears: 4


Meet Archie Pawston, Beatrice Mellifera, Ben Hiberneczek and Lillian McQuill. Fill all hearts for Lee Arjun Bhalla, Berry Dennings, Octavia Cubbins and Clyde Wallace and speak with them. Next day bears will be replaced with new ones.

Conversationalist Tier 2
Complete story quests for new neighbears: 20


There are more than 80 story quests total. You will receive up to 3 story quests per day.
Archie Pawston[cozygrove.fandom.com]
Beatrice Mellifera[cozygrove.fandom.com]
Ben Hiberneczek[cozygrove.fandom.com]
Lillian McQuill[cozygrove.fandom.com]

Lepidopterist: Beginner
Find butterflies: 5


Lepidopterist: Intermediate
Find butterflies: 50


Lepidopterist: Expert
Find butterflies: 100


Lepidopterist: Elite
Find butterflies: 200


You could catch 1-8 butterflies per day. Game spawns some at the start of each day and additional ones randomly. Rain prevents them from spawn.

Party All Week
Initiate a party with Archie's help each day for multiple days: 7


Fnish all story quests for Archie's and you will be able to start a party. Do it 7 days in a row.