Here is the full list of all 21 Bankrupt Heroines achievements.
Get 50 Gold Boxes
Destroy 1000 of little noob monster
Run 12,872 meters in the whole game
Clear a stage without destroying any monsters
Destroy the boss monster
Clear every NPCs
Unlock all weapons
Meet every NPCs
Waste 50,000 of Ammunitions
Destroy 100 of flying monsters
Reach 1,000 meters
Gain 25,000 golds in a stage
Gain 1,000 scores for a game
Gain 10,000 golds in a stage
Reach 200 meters
Reach 300 meters
Reach 500 meters
Gain 5,000 golds in a stage
Die in 100 meters
Upgrade a weapon's damage up to 100
Gather 100,000 golds