ActionCasualIndie
9th Sentinel Sisters
Not enough reviews
Started playing 98% of owners
Steam reviews 70% positive of 283
What the data shows
- Only 287 reviews so far — too early to tell.
- 98% of owners got the first achievement.
When it gets good
Share of positive reviews by how many hours the reviewer had played when writing the review.
Not enough reviews.
Where players quit
Share of players who started the game and reached each story milestone. 100% is the most common achievement (97.9% of owners), so people who bought the game and never launched it don't count.
Story milestones aren't labeled yet; all achievements are listed below.
All achievements (55)
- The first step Clear the square for the first time 100%
- Birth! Reach level 5 99%
- Parts fan Use 5 kinds of parts 97%
- Supplies Open a surprise box for the first time 96%
- Growing to rave reviews! Reach level 10 95%
- Maximum armed Get 6 weapons 94%
- Get out of the way! Defeated 1,000 enemies in total 94%
- Parts collector Use 10 kinds of parts 93%
- Work of art Raise the parts to the maximum level 92%
- It is still developing! Reach level 20 89%
- Class A pilot Defeated 5,000 enemies in total 88%
- Housecleaning Defeat 1,000 bodies in one battle 88%
- First treasure Open the gold supply box for the first time 87%
- Recycling The acquired junk exceeds 10,000 86%
- S class pilot Defeated 10,000 enemies in total 84%
- World fragments Watch Trace Reaction 30 times 84%
- Parts mania Use 20 kinds of parts 81%
- Eldest daughter's steps Clear any route with the character "Saika" 79%
- Pass the point! Reach level 40 79%
- Do not give up! The number of sorties exceeded 10 times 79%
- Generous Open 50 surprise boxes 78%
- Ops #1 Clear Clear the route Ops #1 "Patrol" 77%
- Third daughter's steps Clear any route with the character "Yayoi" 72%
- Ace pilot Defeated 50,000 enemies in total 71%
- Super engineer The acquired junk exceeds 100,000 69%
- Still growing! Reach level 60 67%
- Fifth daughter's steps Clear any route with the character "Fem" 66%
- Win that grasped Clear the battle with 5 % or less HP 60%
- The truth of the world Watch Trace Reaction 100 times 59%
- Unequaled Defeated 100,000 enemies in total 58%
- Weapon factory The rank of weapon remodeling reaches the maximum 57%
- Preparation for battle The rank of fuselge remodeling reaches the maximum 56%
- In great shape! Reach level 80 54%
- Overload Raise your weapon to the maximum level 51%
- Missile master The level of the missile reaches the maximum 42%
- Part geek Use 30 kinds of parts 41%
- Shotgun master The level of the shotgun reaches the maximum 40%
- Rail gun master The level of the railgun reaches the maximum 39%
- Assault rifle master The level of assault rifle reaches the maximum 39%
- Iai blade master The level of the iai blade reaches the maximum 37%
- Laser master Laser level reaches the maximum 36%
- Bazooka master The level of the bazooka reaches the maximum 35%
- Electromagnetic master The level of electromagnetic reaches the maximum 35%
- Energy field master The level of the energy field reaches the maximum 31%
- Rolling cutter master The level of the rolling cutter reaches the maximum 31%
- Drill master The level of the drill reaches the maximum 30%
- Ninja boomerang master The level of the ninja boomerang reaches the maximum 30%
- Plasma cannon master The level of the plasma cannon reaches the maximum 30%
- Treasure hunter Open 300 surprise boxes 24%
- Ops #2 Clear Clear the route Ops #2 "Exploration" 21%
- Second daughter's steps Clear any route with the character "Nina" 20%
- Day after day The number of sorties exceeded 50 times 17%
- Fourth daughter's steps Clear any route with the character "Tetra" 14%
- Continuation is power The number of sorties exceeded 100 times 3.7%
- And tomorrow too The number of sorties exceeded 300 times 1.2%
Steam page Updated: 2026-10-22.