To get the gold armor (only in normal mode), you must find special swords in each level, except 4. If all of them are found, when you defeat Axel Gear and get his sword on level 6, lighting will strike it and give you gold armor.

Level 1: After busting the screw you will fall. Look to the left and jetpack to the wall. You will enter a place with 10 red GS and the sword.

Level 2: At a certain part of the level, there will be two ways to proceed. Take the one at the top. Get through the next difficult part to get the sword.

Level 3: Rocket up the holes to eventually find it.

Level 4: None.

Level 5: After passing the lightning part, rocket back up and break the pillar. Defeat the eye and go to it. You can also get one after defeating the green robot.

Level 6: Defeat Axel Gear.