Here is the full list of all 84 Metal Waltz: Anime tank girls achievements.
B.Châtillon 25t reached level 90
Sd.Kfz.234/1 reached level 90
Assemble a squad (IS-2М，Churchill AVRE，M26 Pershing)
Sd.Kfz.234/3 reached level 90
Assemble a squad (A34 Comet，T-46，Grant Mk-VII)
Assemble a squad (T-44-100，M24，T-60)
Assemble a squad (PzKpfw III mod. L，ISU-122，SPIC)
Assemble a squad (Churchill Mk-IV，Churchill Mk-VII，Churchill Mk-VIII)
Assemble a squad(T95，M36 Jackson，T17E1 Staghound "Mk-I")
Assemble a squad (ПТ-САУ Archer，САУ Birch Gun，StuG III Ausf. F)
Assemble a squad (Tiger mod. E，Panther mod. A，Panther mod. G)
You get "Chaffee Mic" emblem
Rocket-Propelled reached the 10th level
Clear "Story" mode`s volume 21 chapter 1
Assemble a squad (M103A2，M6A1，SPG M37)
Collect 200 maidens
Assemble a squad(KV-1B，KV-2，KV-5，KV-85)
Assemble a squad (ASU-85，М40，T-60/BM-8-24)
Assemble a squad(T-34M，T-43，СТ T-28)
Assemble a squad ( B.Châtillon 25t，БТР-50ПА，SdKfz251-9)
To use this recipe 999x3 in the "Depot BWMG"
First awarding
Clear "Story" mode`s volume 20 chapter 2
Headquarters has achieved a 10-level
Clear "Story" mode`s volume 19 chapter 4
Headquarters has achieved a 20-level
To collect 5000000 silver coins
Clear "Story" mode`s volume 18 chapter 4
Collect 150 maidens
Heat shells reached 10th level
Clear "Story" mode`s volume 17 chapter 3
Clear "Story" mode`s volume 16 chapter 4
The first improvement of Metall-maiden up to 3 stars
Clear "Story" mode`s volume 15 chapter 4
Headquarters has achieved a 15-level
Clear "Story" mode`s volume 14 chapter 4
Collect 100 maidens
Clear "Story" mode`s volume 13 chapter 3
The achievement of the 1st level "BWMG Depot"
To collect 1000000 silver coins
Clear "Story" mode`s volume 12 chapter 3
Clear "Story" mode`s volume 11 chapter 4
Collect 50 maidens
Clear "Story" mode`s volume 10 chapter 3
Clear "Story" mode`s volume 9 chapter 4
To collect 500000 silver coins
Clear "Story" mode`s volume 8 chapter 4
The first upgrading maiden up to two stars
6 members in the squad
Clear "Story" mode`s volume 7 chapter 4
Clear "Story" mode`s volume 6 chapter 2
Clear "Story" mode`s volume 5 chapter 4
To collect 100000 silver coins
60 wins in "Clash"
50 wins in "Clash"
Clear "Story" mode`s volume 4 chapter 4
Click to view the squad
40 wins in "Clash"
20 wins in "Clash"
30 wins in "Clash"
10 wins in "Clash"
Clear "Story" mode`s volume 3 chapter 2
Headquarters has achieved a 5-level
5 members in the squad
The first modernization of equipment
The first transport
Clear "Story" mode`s volume 2 chapter 4
The achievement of the 1st level "Naval port"
5 wins in "Clash"
3 wins in "Clash"
Commander reached up to 10th level
The launch "Panzer waltz
Clear "Story" mode`s volume 1 chapter 4
Collect 30000 silver coins
The first victory in the |Clash| mode
First enhance
The achievement of the 1st level "Склад серебра"
The first installation of gun
The achievement of the 1st level "Excavator"
The first advance in science and technology
4 members in the squad
First time upgrading Metall-maiden
The first equipment installation
The first victory in the |Story| mode