Here is the full list of all 32 Star Hunter DX achievements.
Continue on Stage 1
Clear the game with CAT-99
Clear the game with Edgar
Clear Bounty Hunter mode without continuing
Score over 30,000,000 points
Clear Stage 5 without dying
Defeat the Stage 1 boss with 50 seconds remaining
Start a game in Bullet Hell mode
Play any stage in Practice mode
Only collect gold at x8 multiplier on any stage
Read the How to Play guide
Rescue all 30 astronauts
Trigger a boss escape pod
Rescue all astronauts in Stage 4
Clear the game with Luna
Clear Stage 6
Clear Stage 5
Unlock Edgar
Clear Stage 4
Rescue 15 astronauts
Collect a 1-UP item
Clear Stage 3
Recharge a bomb
Unlock CAT-99
Clear Stage 2
Clear Stage 1
Use bullet time
Collect a high value energy cube
Clear any mode without continuing or using bullet time
Clear Bullet Hell mode without continuing
Don't kill any jellyfish in Stage 3
Destroy the Stage 5 boss' escape pod