Arc Strategy Guide In general The wave gun, which can be found in the ketar level, is extremely useful because it has a wide range of impact. But in the last level (the lab) you've got to have the laser at some points. Still, for smaller enemies, you can also use the wavegun here. Sector 2: Hi Tech The code for the first computer is "DO RE MI" The little passageway to the right of the entrance can be entered when you have the power to transform. Sector 5: The Maze This is a very difficult sector. There's a knack to it: don't shoot anyone! Head left from the entrance, and then down, but make sure you don't shoot at the enemies. This shouldn't prove too difficult. Then, when you can see that there's a way up again, watch out because: there is only one way to get past the platform (either over or under it)... Then go up, to the computer. To really activate the computer, shoot some enemies (yes it's OK now...) and relogin. That should do the trick. Sector 7: The Lab Once the timer starts counting down, you have to log in on the computers in a certain sequence in order to open all the gates. Trial and error (watch the changing messages!) will do the job. The End Boss Seems difficult? Nah. Just select the bullet weapon, kneel and let rip! If you keep hitting him, explosion sounds can sometimes be heard through all the thunder of the explosions of the creature on the ceiling. Needless to say, he takes a lot of hits before dying. Just keep shooting and try to be in the middle of the lasers from the ceiling creature so he won't hit you.