Here is the full list of all 35 Roboshark Rampage achievements.
You beat Level 2!
You beat Level 3!
You beat Level 4!
You beat Level 5!
You beat Level 6!
You beat Level 7!
You beat Level 8!
You beat Level 9!
You beat Level 10!
You beat Level 11!
You beat Level 12!
You beat Level 13!
You beat Level 14!
You beat Level 15!
You beat Level 16!
You beat Level 17!
You beat Level 18!
You beat Level 19!
You successfully traveled 20,000m in one run!
You successfully traveled 50,000m in one run!
You unlocked 2hp!
You unlocked 3hp!
You unlocked 4hp!
You unlocked 5hp!
You unlocked the Buzzsaw to shred your enemies!
You unlocked the Dai Katana to slice your enemies!
You unlocked the Cyber Trident to majestically pierce your enemies!
You unlocked the Boom Stick to explode your enemies!
You unlocked the Terror From Below to destroy anything that stands in your way!
You unlocked your first pet!
You unlocked your second pet!
You unlocked your third pet!
You unlocked your fourth pet!
You beat level 0!
You beat level 1!