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