East Tower - Kuon (ET Series Vol. 3)
30 Achievements
0-1h
Steam
Stage 4 Cleared! (S Rank)
You've cleared Stage 4 and done an excellent job!
30.1%
How to unlock the Stage 4 Cleared! (S Rank) achievement in East Tower - Kuon (ET Series Vol. 3) - Definitive Guide
You can pick either option. You will automatically receive an S ranking, even if you are going through the A ranking route.