Here is the full list of all 34 Heavy Fire: Shattered Spear achievements.
Find and destroy 100% of special objects.
Find and destroy 75% of special objects.
Kill 250 enemies with a pistol.
Find and destroy 50% of special objects.
Fire 25,000 rounds of ammunition.
Complete a level without causing any destruction.
Complete the last mission on Veteran Mode without using checkpoints.
Complete all missions in Veteran Mode.
Achieve 100% sniper accuracy.
Perform 100 headshots in total.
Destroy 500 objects in total.
Complete all missions in Rookie Mode.
Complete the 12th mission.
Complete any mission without being hit.
Kill 500 enemies with an additional/special weapon.
Score 1,000 total kills.
Complete the 10th mission.
Perform 50 headshots in total.
Complete the 8th mission.
Destroy 200 objects in total.
Complete the 7th mission.
Perform 5 headshots in a row.
Chain together 7 consecutive kills.
Score 500 total kills.
Complete the 5th mission.
Perform 4 splash damage kills simultaneously.
Perform 5 splash damage kills simultaneously.
Complete the 3rd mission.
Score 250 total kills.
Complete the 2nd mission.
Chain together 5 consecutive kills.
Complete any mission with 50% accuracy or higher.
Perform a QTE perfectly in one level.
Destroy all red barrels in one level.