Purchase any upgrade.

Purchase all upgrades in one category.

Fully upgrade both main weapons.

Destroy 10 enemies by crashing into them.

Pick up 30 gears in one attempt.

Unlock a new background.

Destroy 5+ enemies with one katana slash.

Reach wave #3.

Reach a highscore of 5000+ points.

Reach a score multiplier of 9.

Destroy a total of 250 enemies.

Destroy a total of 500 enemies.

Destroy a total of 1000 enemies.

Pick up a total of 100 gears.

Pick up a total of 250 gears.

Pick up a total of 500 gears.

Ride every hoverbike at least once.

Defeat your first boss.

Unlock one additional boss.

Defeat every boss at least once.

Defeat any boss without taking damage.