1. Jet Pack.
The jet pack lets you hover for a period of time. You can find it in the egg carrier. Go in the inside of the ship. Then go on the second floor, one of the doors will lead to where it is.
2. Lazer Blast.
The lazer blast is also located in the Egg Carrier. This is useless because all it does is make a different sound when you shoot your gun. So just go inside of the ship, and I don't know where, but it is inside one of the rooms.
E-102 Gamma level cheats.
There is not that many cheats so I will just tell you that if you lock on your gun for a while, and let go, you will get a lot of time.