Here is the full list of all 41 Danger Scavenger achievements.
Beat the game with HUN-73R
Destroy 100 enemies with melee attack
Deal total of 10.000 damage
Beat the game with Captain J.
Get total of 10.000 scrap
Complete 10 skyscrapers
Destroy 1337 enemies
Collect 100 items
Finish the game on Hardcore mode
Finish the game
Finish broadcast skyscraper
Beat the game with Professor
Deal 1.000 damage in one shot
Get 10.000 score in one run
Finish military skyscraper
Destroy 100 enemies during hacking
Finish biotech skyscraper
Perform 100 roof kills
Heal total of 25 hp
Finish oriental skyscraper
Deal 200 or more damage in one shot
Get 1.000 scrap in one run
Deal 300 damage using environment
Complete diesel skyscraper
Finish diesel skyscraper
Destroy 5 enemies with one explosion
Unlock Echo - the hacker
Find a secret
Die in coop mode
Die 3 times
Die by falling from the roof
Fall from the rooftop 10 times
Finish any skyscraper without getting hit
Finish any skyscraper without using your weapon
Discover 20 new items
Unlock all weapons
Get 3 daemons installed in one run
Heal 10 hp in coop mode
Beat the game with Keiko
Beat the game with Rhino
Beat the game with Echo