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