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