Secret - Weapon quick select
Hold your finger on the top half of the screen and a weapon quick select appears along the top of the screen. You can charge the buster then switch to a special weapon with this to avoid wasting the special weapon's energy with the shot fired when you start charging.
Unlockable - Achievements
Complete list of Game Center Achievements.
100-Yard Dash! (15 pts) - Obtain Leg parts.
2 of Hearts (15pts) - Obtain 2 Health Boost hearts.
3 of Hearts (15pts) - Obtain 3 Health Boost hearts.
4 of Hearts (15pts) - Obtain 4 Health Boost hearts.
5 of Hearts (15pts) - Obtain 5 Health Boost hearts.
6 of Hearts (15pts) - Obtain 6 Health Boost hearts.
7 of Hearts (15pts) - Obtain 7 Health Boost hearts.
8 of Hearts (15pts) - Obtain 8 Health Boost hearts.
Ace of Hearts (15pts) - Obtain 1 Health Boost heart.
Bubbly Bat (20 pts) - Defeat a Batton M-501.
Captain of the Seas (15 pts) - Defeat Launch Octopus using his greatest weakness.
Carnivorous Tank (15 pts) - Defeat D-Rex using his greatest weakness.
Daring Collector (20 pts) - Pick up the items on top of the spikes in Sigma's Palace, Pt. 3.
Dawn of Destiny (15 pts) - Defeat Sigma's second form using his greatest weakness.
Demon of Dimensions (15 pts) - Defeat Boomer Kuwanger using his greatest weakness.
Emperor of Ice (15 pts) - Defeat Chill Penguin using his greatest weakness.
End of an Era (15 pts) - Defeat Sigma using his greatest weakness.
Energy Mine Reclaimed (10 pts) - Clear Armored Armadillo's stage.
Flashy Firefly (20 pts) - Defeat a Hotarion.
Forest Base Reclaimed (10 pts) - Clear Sting Chameleon's stage.
Fortress Tower Reclaimed (10 pts) - Clear Boomer Kuwanger's stage.
General of Steel (15 pts) - Defeat Armored Armadillo using his greatest weakness.
Hadoken! (20 pts) - Obtain the ability to perform Hadokens.
Hard-Headed (15 pts) - Obtain Helmet Parts.
Heartless Hunter (25 pts) - Defeat any Boss within 10 seconds.
Insurance Plan A (15 pts) - Obtain Subtank A
Insurance Plan B (15 pts) - Obtain Subtank B
Insurance Plan C (15 pts) - Obtain Subtank C
Insurance Plan D (15 pts) - Obtain Subtank D
Intro Stage Reclaimed (10 pts) - Clear the Intro stage.
Item Hater (30 pts) - Clear Story mode without picking up a single item that was dropped by an enemy.
Loyal Wolf (15 pts) - Defeat Velguarder using his greatest weakness.
Master of the Forest (15 pts) - Defeat Sting Chameleon using his greatest weakness.
Maverick Hunter (30 pts) - Clear Story mode using only the X-Buster.
Merciful Hunter (25 pts) - Make it to any Boss without firing a single shot.
Nerves of Steel (30 pts) - Clear Story mode without using a single Subtank.
New-Type Airport Reclaimed (10 pts) - Clear Storm Eagle's stage.
Nimble-Footed (25 pts) - Clear any 1 of the 8 Maverick's stages without taking any damage.
Oceanic Base Reclaimed (10 pts) - Clear Launch Octopus's stage.
Oil Well Sealer (20 pts) - Sever Flame Mammoth's trunk.
Oligarch of Oil (15 pts) - Defeat Flame Mammoth using his greatest weakness.
Power Plant Reclaimed (10 pts) - Clear Spark Mandrill's stage.
Prince of the Skies (15 pts) - Defeat Storm Eagle using his greatest weakness.
S-A Class Hunter (30 pts) - Defeat every boss without taking any damage.
Sigma's Palace, Pt. 1 Reclaimed (10 pts) - Clear Part 1 of Sigma's Palace.
Sigma's Palace, Pt. 2 Reclaimed (10 pts) - Clear Part 2 of Sigma's Palace.
Sigma's Palace, Pt. 3 Reclaimed (10 pts) - Clear Part 3 of Sigma's Palace.
Sigma's Palace, Pt. 4 Reclaimed (10 pts) - Clear Part 4 of Sigma's Palace.
Snowy Fields Reclaimed (10 pts) - Clear Chill Penguin's stage.
Solitary Rogue (15 pts) - Defeat Vile using his greatest weakness.
Speed Demon (30 pts) - Clear Story mode within 60 minutes.
Tangled Web (15 pts) - Defeat Bosspider using his greatest weakness.
Tough Guy (15 pts) - Obtain Body Parts.
Tsar of Electricity (15 pts) - Defeat Spark Mandrill using his greatest weakness.
Unlimited Potential (30 pts) - Clear Story mode without picking up a single upgrade.
Unstoppable Firepower (15 pts) - Obtain Arm parts.
Wall of Terror (15 pts) - Defeat Rangda Bangda using his greatest weakness.
Weapons Plant Reclaimed (10 pts) - Clear Flame Mammoth's stage.
Whirlpool Stopper (20 pts) - Sever Launch Octopus's tentacles.
Will to Live (30 pts) - Clear Story mode without using a single continue.
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