Shmup Achievement Ideas

Shmup Achievement Ideas

Boom Shaka's picture

Per the subject, I'm looking for ideas for achievements for my space shooter.

I have the basics (most are leveled up to 10):

kill xxx opponents
complete xxx missions
upgrade ship
upgrade weapon
ranking (i.e. cadet, Lt., Cpt., Maj....)

Any other suggestions? Or maybe ways I can split these up into multiple achievements?

ABOUT THE GAME
standard scrolling shooter with ship and weapon upgrades
there are both flying and ground targets (dumb and smart AI)
there will be environmental hazards/flying skill tests
there are random powerups (shield, health, currency, etc.)

Thanks in advance!