Here is the full list of all 19 Shadow Bug achievements.
Earn 2000 points in a level.
Die 100 times.
Die 500 times.
Find 10 epic spirits.
Find 20 epic spirits.
Find 30 epic spirits.
Kill 5 enemies in a row.
Kill 10 enemies in a row.
Complete level: Core Guard
Complete level: The Core
Open 50 locks.
You shut down the factory!
Kill an enemy with a lock.
Kill an enemy with an axe.
Use 50 levers.
Complete level: March
Complete level: Cutter
Complete level: Slimy Hands
Complete level: Toxic Terror