Kill 100 transports.
Collect 150 gems.
Collect 100 gems.
Kill 12 bosses.
Kill 1000 enemies.
Attain lieutenant rank.
Attain sergeant rank.
Collect 100 ranks.
Collect 75 gems.
Kill 750 enemies.
Collect 50 gems.
Kill 500 enemies.
Kill 6 bosses.
Collect 25 gems.
Kill 3 bosses.
Kill 250 enemies.
Attain corporal rank.
Attain private rank.
Kill 100 enemies.
Enter asteroid field 3 times.
Enter laser barrage 3 times.
Enter meteor storm 3 times.
Enter minefield 3 times.
Kill 2500 enemies.
Attain captain rank.
Attain major rank.
Attain colonel rank.
Finish a loop.