Here is the full list of all 32 Blue Rider achievements.
Destroy Spider in Stage Two
Ride 1000 Km over the abyss or lava
Destroy Bullygun in Stage One
Destroy Scorpion in Stage Three
Destroy Worms in Stage Four
Destroy Octupus in Stage Five
Destroy Totem in Stage Six
Destroy Train in Stage Seven
Destroy Flyer in Stage Eight
Destroy Final Boss in Stage Nine
Finish the game from the beginning
Finish the game with only one life
Finish the game using only the red shot
Finish the game using only the blue shot
Finish the game without using missiles
Find all the relics of the game
Find all the relics in a single game
Find all the Hidden Treasures of the game
Destroy all the enemies in a single game
You have reached 100000 points
You have reached 175000 points
You have reached 250000 points
Keep untouched for one entire level
Keep untouched for two entire levels
Keep untouched for three entire levels
Finish the entire game in less than 90 minutes
Finish the entire game in less than 60 minutes
Finish the entire game in less than 30 minutes
Achive a Rampage x10
Destroy 10 enemies using mines
Destroy 25 enemies using mines
Destroy 50 enemies using mines