Upgrade the motors to the maximum
Upgrade the motors to level 3
Upgrade an armour to the maximum
Upgrade an armour to level 3
Upgrade an armour to level 2
Upgrade a shield to the maximum
Buy a skin
Defeat the second boss
Upgrade a shield to level 3
Upgrade a shield to level 2
Upgrade the motors to level 2
Upgrade a weapon to the maximum
Defeat the first boss
Upgrade a weapon to level 3
Upgrade a weapon to level 2
Equip the magnet
Destroy 20 anti-aircraft guns
Buy an upgrade
Destroy 20 enemies in a row
Complete the tutorial