1.0·Every feature free until Premium arrives in October
Need to Know achievements, rarest first.
Every achievement in Need to Know, ranked by how many Steam players have unlocked it. Global completion rates from Steam, refreshed daily.
The rarest achievement
A hidden achievement
9.3%
of players
- Achievements
- 10
- Rarest
- 9.3%
- Ultra rare (under 5%)
- 0
- Average completion
- 33%
1
Clearance Level 1Hidden
Hidden achievement. Description revealed on unlock.
9.3%
2
Clearance Level 2Hidden
Hidden achievement. Description revealed on unlock.
11%
3
Clearance Level 3Hidden
Hidden achievement. Description revealed on unlock.
13%
4
Clearance Level 4Hidden
Hidden achievement. Description revealed on unlock.
15%
5
Clearance Level 5Hidden
Hidden achievement. Description revealed on unlock.
18%
6
Clearance Level 6Hidden
Hidden achievement. Description revealed on unlock.
25%
7
Clearance Level 7Hidden
Hidden achievement. Description revealed on unlock.
34%
8
The InsideHidden
Hidden achievement. Description revealed on unlock.
49%
9
Still HereHidden
Hidden achievement. Description revealed on unlock.
67%
10
On Probation
Reach Clearance Level 10.
94%
Percentages are Steam's global unlock rates across all players who own Need to Know, refreshed daily. Under 5% is marked in the lit blue.