Here is the full list of all 34 Minishoot' Adventures achievements.
Finish the game in Original mode (or higher)
Finish the game in Advanced mode
Surrender your power and leave the world
Reunite the family
Find all modules
Listen closely to the bard for 15 seconds
Finish each arena stage with at least 5 hearts left
Finish all stages of the arena
Beat the true last boss
Win the race against all spirits
Find all golden scarabs
Meet with the quasi-divine entity
In the forest, find the secret path in the secret path!
Read all the lore from the ancient tablets
Survive a fall from the 5th floor
Free all your friends
Finish the game in Explorer mode (or higher)
Beat the final boss
Beat the third boss
Beat the beach boss
Destroy 50 coconuts
Wake up the giant turtle
Find the source of the corruption
Beat the second boss
Beat the desert boss
Break all jars in the family house
Downgrade an upgrade
Destroy 20 big non-boss enemies
Find three golden scarabs
Beat the first boss
Wake up the tree thanks to the bard
Win a race against a spirit
Find and use the Mini-gun
Fall into water