Here is the full list of all 12 Blood Alloy: Reborn achievements.
Unlock all equipment upgrades
Maintain a 2.5x style multiplier for 30 seconds
Destroy 100 explosive barrels
Unlock the complete soundtrack
Kill one of each enemy
Maintain a 10x combo multiplier for 1 minute
Complete the tutorial
Complete 10 bounties
Blast 26.2 miles
Destroy the gunship
Kill two gunships in a single run
Maintain max multipliers for 30 seconds