Here is the full list of all 24 The Light Brigade achievements.
Reload 100 times. (accumulated)
Kill an enemy sniper from far away.
Spend 1,000 gold at a store.
Defeat the second boss.
Land 250 gunshots. (accumulated)
Travel 1,000 meters. (accumulated)
Try to fire your weapon without first reloading it.
Use an enemy's dropped weapon to kill another enemy.
After death, find your ghost and pray to it.
Pray to the Mother.
Die and be revived for the first time.
Defeat the first boss.
Rescue an ally Light Brigade soldier out on a run.
Finish your first run, start to finish.
Land 250 headshots. (accumulated)
Hold onto 1,000 coins at once during a run.
Never miss a shot during a fully completed run.
Every single shot during a fully completed run is a headshot.
Use the wishing well.
Kill an enemy bomber using a grenade.
Kill an enemy priest using magic.
Defeat the Father.
Have a hypnotized enemy kill another enemy.
Cock an ally Light Brigade soldier's rifle.