Viewed from above in levels with simple sideways scrolling, the objective on each level is to shoot each of the weapons crates, before going through the newly-opened exit. Guard droids must be avoided, but shooting them can leave them inactive for a short period of time, and they can now be shot or hit to push them in that direction, which can be used strategically to make more paths available. There is a 2-minute time limit on each level. Every 5th level has a nuclear weapon guarded by a seeking enemy droid, which continually follows you.
