Here is the full list of all 19 JASEM: Just Another Shooter with Electronic Music achievements.
Pass the boss on level 1
Kill all the enemies on level 1
Pass the boss on level 1 without dying
Pass the boss on level 2
Kill all the enemies on level 2
Pass the boss on level 2 without dying
Pass the boss on level 3
Kill all the enemies on level 3
Pass the boss on level 3 without dying
Pass the boss on level 4
Kill all the enemies on level 4
Pass the boss on level 4 without dying
Pass the boss on level 5
Kill all the enemies on level 5
Pass the boss on level 5 without dying
Kill all the bosses on level 12345
Complete tutorial
Die in the menu
Die in the tutorial