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