Blast Helm armor
Defeat the Infinity level 50 Boss to get the Blast Helm armor.
Coded Arms
When Creating a profile Name it as "All". To start off with all weapons and Armor.
Defeating Enforcer
When Enforcer puts up his big shield and starts advancing down the field, go through it. Get behind and follow him. Take out your Judgment or Trident (make sure it is upgraded to at least level 3) and shoot the yellow circle on his back. Use the quick reload tactic and he should go down very easily.
Defeating Mantis
Upgrade your Vulcan to its highest level and stock up on ammunition. Throw a few honeypots to lure Mantis into one spot so that he will not attack then unload on him. This brings his health down drastically.
Inferno weapon
Defeat Colossus (Sector 2 Base Boss) to get the Inferno weapon.
Infinite bonus level
Successfully complete story mode to unlock the Infinite bonus level.
Judgment weapon
Defeat Enforcer (Sector 2 City Boss) to get the Judgment weapon.
Neutron Gun weapon
Defeat the Infinity level 30 Boss to get the Neutron Gun weapon.
Onslaught weapon
Defeat the Infinity level 10 Boss to get the Onslaught weapon.
Quick reload
Start to reload then switch to a different weapon. Switch back and your weapon will be reloaded.
Surge Helm armor
Defeat the Infinity level 40 Boss to get the Surge Helm armor.
Trident weapon
Defeat the Infinity level 60 Boss to get the Trident weapon.
Vulcan weapon
Defeat the Infinity level 20 Boss to get the Vulcan weapon.