Here is the full list of all 19 LogiGun achievements.
Did what you came to do
Solved all levels
Solved level 10-3
Solved level 10-2
Solved level 10-1
Solved floor 9
Solved floor 8
Solved floor 7
Solved floor 6
Solved floor 5
Got introduced to the PB-6
Solved floor 4
Got introduced to the GCB-5
Solved floor 3
Got introduced to the PG-4
Solved floor 2
Got introduced to the GRP-9
Solved floor 1
Got introduced to the ZPR-12