Here is the full list of all 43 THE LAST HUMAN IS A BIKER achievements.
kill 50 vermins
Kill 500 vermins
Kill 2000 vermins
Kill 50 bombers
Kill 500 bombers
Kill 1500 bombers
Kill 100 stingers
Kill 1000 stingers
Kill 2500 stingers
Kill 25 spires
Kill 250 spires
Kill 750 spires
Kill 25 snipers
Kill 250 snipers
Kill 750 snipers
kill the kraken
Unlock the Ravager
Unlock the Smasher
Unlock the Destroyer
Unlock the striker
Unlock the Kaneda
Unlock the Turismo
Upgrade the Spray module to level 5
Upgrade the Burst module to level 5
Upgrade the Damage module to level 5
Upgrade the Pierce module to level 5
Upgrade the Fast reload module to level 5
Upgrade the Incendiary module to level 5
Upgrade the Explosion module to level 5
Upgrade the Electrical module to level 5
Upgrade the Duplication module to level 5
Upgrade the Efficiency module to level 5
Upgrade the Bounce module to level 5
Upgrade the Gravity module to level 5
win the arcade mode
Score 20 000 points in a game
Score 100 000 points in a game
Score 200 000 points in a game
score 500 000 points in a game
Score 1 000 000 points in a game
Reach level 5
Reach level 15
Reach level 25