Here is the full list of all 52 Sunrider: Liberation Day achievements.
Have a player unit get killed at 0 to -9 HP.
Capture Cosette
Win a battle with only the Sunrider left alive.
Survive an attack with less than 10hp remaining.
Find all the endings in REturn.
Find Asaga's alternate ending.
Find Asaga's normal ending.
Find Sola's alternate ending.
Find Sola's normal ending.
Find Ava's normal ending.
Find Asaga's happy ending.
Find Sola's worst ending.
Find Sola's happy ending.
Find Icari's happy ending.
Find Ava's happy ending.
Have 5 player ships or more get hit by an AoE rocket.
Complete a battle while ignoring one of your Ryders.
Hit 8 units at once.
Kill 30 units with melee.
Scavage the starship grave yard to discover the Falcon.
Contract your first merc.
Kill 10 units in the same turn.
Kill a PACT support with melee.
Use vanguard for the fist time.
Destroy a capital ship with an assault weapon.
Have the Paladin get destroyed with Draw Fire ability active.
Have a non-mercenary player unit get destroyed for the first time.
Finish the prologue.
Kill Cosette.
Lose a mercenary unit.
Kill 1000 enemies
Get 10 stacks of 'Awakening' on Asaga.
evive the Phoenix twice in the same battle.
Repair 50'000 hp in battle with the Liberty.
Beat the game on Captain difficulty or higher.
Beat the game on Admiral difficulty or higher.
Beat the game on Space Whale difficulty. Yeah, good luck with that.
Complete the game without buying anything at the store.
Complete the game without ever buying new upgrades.
Complete the game with the wishall still in your inventory.
Use short range warp 3 times in the same turn.
Kill 2 PACT support units in the same turn with Sola.
Save up to 50'000 credits.
Buy at least 20 different things in the store (including merc contracts).
Put all debufs (except Disable) on the same enemy.
Put 5 different buffs on the same friendly unit.
Have Bianca use Restore on an allied unit afflicted by all possible debuffs.
Perform exactly 21 attacks with Black Jack in a battle.
Have both the Phoenix and the Paladin end their turns next to each other every turn for an entire battle
Restore the Havoc.
Leave the starship grave yard alone.