Unlock Lacus Clothing Type A:
Buy it at the shop for 300 credits

Unlock Lacus Clothing Type B:
Buy it at the shop for 800 credits

Unlock Lacus Clothing Type C:
Buy it at the shop for 1000 credits

Unlock Lacus Clothing Type D:
Buy it at the shop for 1500 credits

Unlock Very Hard Mode:
Buy it at the shop for 1000 Credits.

Unlock Infinite PS:
Buy it at the shop for 5000 credits.

Unlock Infinite Specials:
Buy it at the shop for 5000 credits.

Unlock Infinte Thrust:
Buy it at the shop for 5000 credits.

Alternate Costumes for Lacus:
Buy the 4 different costumes at the shop and Lacus will randomly appear in one of them when you visit the shop.