Here is the full list of all 75 Together in Battle achievements.
Choose to play on Brutal difficulty.
Choose to play in roguelite mode.
Beat the initial arena qualifier.
Complete the game's combat tutorials.
Drive off thieves without losing any tents.
Trade away a character to another team.
Have a character acquire a personal weapon.
Side with striking workers.
Break up a strike.
Learn the arena organizer's name.
Advance to Gharial League.
Unlock steel weapons and armor at Agarwal's.
Become liked in the shadowling community.
Have a character agree to a marriage proposal.
Gain a loyal spirit.
Drive a spirit away from camp.
Deal a cumulative total of 1000 damage or more to your enemies in battle.
Fall short of funds on payday.
Have a character bunk up in another's tent for the night.
Choose to play on Challenging difficulty.
Send a character off to retrain in a new class.
Use a Book of Power.
Acquire a deck of Psy Clash cards.
Run out of food.
Spend at least 3000 aura at the shop in one day.
Promote characters to an advanced class 10 times.
One of your characters actually died.
Win 20 games of Psy Clash.
Kick at least 10 characters off your teams.
A character has resigned from your team.
Recruit humans 50 times or more.
Become a league team.
Get booed in the arena 8 times or more.
Recruit shadowlings 12 times or more.
Attack an ally.
Recruit spirits 4 times or more.
Recruit assassins 10 times or more.
Recruit axefighters 20 times or more.
Recruit barudit 20 times or more.
Recruit bowmen 20 times or more.
Recruit bronze golems 5 times or more.
Recruit cavaliers 10 times or more.
Recruit crossbowmen 20 times or more.
Recruit cryokineticists 10 times or more.
Recruit dark spriggats 10 times or more.
Recruit engineers 10 times or more.
Recruit frost spriggats 10 times or more.
Recruit gasul 20 times or more.
Recruit golden spriggats 10 times or more.
Recruit kineticists 10 times or more.
Recruit mentalists 10 times or more.
Recruit photokineticists 10 times or more.
Recruit psy healers 20 times or more.
Recruit pyrokineticists 10 times or more.
Recruit red spriggats 10 times or more.
Recruit skiakineticists 10 times or more.
Recruit spearmen 20 times or more.
Recruit stone golems 5 times or more.
Recruit swordsmen 20 times or more.
Grab sacks 200 times or more.
Attack from an elevated position 50 times or more.
Attack from behind 60 times or more.
Form ice bridges 5 times or more.
Make characters collide with things 25 times or more.
Enthrall enemies 20 times or more.
Build bridge tiles 10 times or more.
Use holds to secure a position 20 times or more.
Place traps 50 times or more.
Make enemies fall off of an elevated space 30 times or more.
Make an ally fall off of an elevated space.
Leave characters with the trainer 25 times or more.
Become champions of the arena.
Promote at least one character to each of the 48 prestige classes.
Get the bad ending.