Here is the full list of all 30 Poly Roam achievements.
Discover 10 Buildings
Kill him!
Kill her!
Kill it!
Destroy Spikey!
Destroy Berry!
Destroy Fluffy
Travel 500 km From The Starting Point
Kill 100 Zombie
Gather 1000 Wood
Gather 1000 Stone
Gather 1000 Token
Gather 5 Blueprints
Kill 100 Birds
Kill 50 Fish
Kill All Boss
Kill All Rare
Get All Melee Weapons
Gather All Ranged Weapons
Open The Same Door in a Single Game 100 Times
Kill A Bird At Night In The Swamp
Gather 30 Cars In Safe Zone
Destroy A Boost Stone With Only Explosives
Die At 1% Boss HP
Place 5 Vendors At Safe Zone
Unlock 5 Skins At Frank
Defeat A Boss With Only Melee
Run Out Of Fuel 2 Times Under 1 Minute In Desert
Chill With The Scarecrow And The Wizard On Snow Biome