Frequencies[edit]
Your transceiver can pick up a wide range of frequencies, but only a few of them are actually of use to you throughout the game. The following is a table of people you can contact, and what frequency they can be reached on. Note that once you reach building 2 and beyond in the game, your contacts will change their frequencies.
| Contact | Before building 2 | After building 2 |
|---|---|---|
| Big Boss | 120.85 | 120.13 |
| Resistance Leader Kyle Schneider | 120.79 | 120.16 |
| Resistance Member Diane | 120.33 | 120.91 |
| Resistance Member Jennifer | - | 120.48 (only with 4 stars) |
Secrets[edit]
Reset boss positions[edit]
During a boss fight, the boss's initial position will be reset whenever you press the Select button and examine your weapons or inventory. This can be used to your advantage, for example, in the fight against the bulldozer. If the bulldozer had come too far down the screen for you to attack it, you can view your weapon or inventory sub-screens, and return to the game, and the bulldozer will return to the top of the screen, allowing you to continue fighting it without having to exit the room and start the fight over.
Smaller pitfalls[edit]
Pitfalls are triggered whenever you walk near them. If you happen to press the Select button while they are expanding, and view the weapons or inventory sub-screen, you will actually cause the pitfalls to stop growing. The floor will reappear where the pitfalls once were, but that does not mean they are gone. They are merely smaller than they would be if you happened to allow them to fully expand. If you walk over the tiles that opened before you pressed Select, you will fall in and die.
Skip the super computer[edit]
If you wish not to bother trying to blow up the super computer, you can skip this sequence and warp straight to the final battle. When you arrive in the room with the super computer, stay in the door frame and push 
on the control pad. You will suddenly warp into the next room and the final battle will commence. However, the self-destruct sequence will not trigger, so you will have as much time as you like while completing the last portion of the game.
Beat the Last Boss Easily[edit]
There is an easy way to defeat the Big Boss. Just run to the upper right hand corner of the final room. Big Boss will get stuck in the lower right hand corner. He will be an easy target for your rockets.
Passwords[edit]
You may continue your game from where you left off by entering passwords when you choose "Continue" from the main menu. The following passwords will set you up with certain conditions.
| Password | Description |
|---|---|
21Z1C GZZZG UOOOU UYRZZ NTOZ3 |
All weapons and items |
51222 22222 22222 22222 22222 |
Begin the game with four stars and some items |
21111 1Z111 11111 11111 111BI |
Begin the game with all eight access cards |
3LLLL LLLLL LLLLL LLLLL LLLLL |
Begin the in the jail cell with two stars and some items and weapons. |