What is the rarest achievement in oO?

The rarest oO achievement is “This is sick!”, unlocked by 5.8% of players on Steam.

oO/Achievements

oO achievements by rarity

Global completion percentages from Steam, rarest first

Achievements

Rarest

5.8%

Ultra rare (<5%)

Avg. completion

28%

This is sick!

Reach 100 in endless mode

5.8%

Top 1%

Finish fourth level

11%

Rollin

Reach 15 in endless mode

15%

2πR

Finish third level

21%

Spiral mind

Finish second level

46%

Piece of cake

Finish first level

68%

Percentages are Steam's global unlock rates across all players who own oO, refreshed daily. See live player counts and stats for oO.