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