Here is the full list of all 41 Danger Scavenger achievements.
Finish the game
Finish broadcast skyscraper
Get 10.000 score in one run
Finish military skyscraper
Finish biotech skyscraper
Heal total of 25 hp
Finish oriental skyscraper
Get 1.000 scrap in one run
Perform 100 roof kills
Deal 200 or more damage in one shot
Complete diesel skyscraper
Finish diesel skyscraper
Deal 300 damage using environment
Die in coop mode
Get total of 10.000 scrap
Deal total of 10.000 damage
Finish the game on Hardcore mode
Die 3 times
Destroy 1337 enemies
Deal 1.000 damage in one shot
Find a secret
Complete 10 skyscrapers
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
Destroy 5 enemies with one explosion
Destroy 100 enemies during hacking
Collect 100 items
Get 3 daemons installed in one run
Destroy 100 enemies with melee attack
Heal 10 hp in coop mode
Unlock Echo - the hacker
Beat the game with Captain J.
Beat the game with HUN-73R
Beat the game with Keiko
Beat the game with Rhino
Beat the game with Echo
Beat the game with Professor