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