Start the game with only one credit and max out your shot power.
Start the game with only one credit and max out your shot speed.
Start the game with only one credit and max out your shield.
Start the game with only one credit and max out your speed.
Start the game with only one credit and max out your zap power.
Have all temporary map upgrades active past level 7.
After starting the game with one credit, use the warp on level one and then defeat the xybot master in one credit.
Reach one million score.
From the start of the game reach level 8 without: firing a shot, using the warps, or dying.
Reach level 50 and decide to quit because this is taking too long. (There is no end.)
Complete one cycle of xybots by defeating the xybot master.