There is a hidden pause control in the game. When you press the 'SPACEBAR' to access the overhead map screen, if you keep it held down the clock stops until you release it.
For invincibility, type in "SCORE" at the title screen.
When reaching a new level, it's worthwhile to sacrifice a life to see the explosion pattern. When trying to detonate a pulsing bomb, pick it up; it's easier to see its size. You are invulnerable to explosions when teleporting, so use it to your advantage! A blind droid can't activate switches.
000-"BOMB" | 044-"BIRD" | 076-"SPOT"
008-"ROSS" | 048-"LEAD" | 080-"GOLD"
016-"RATT" | 052-"TAPE" | 084-"PALM"
024-"LISA" | 056-"WEED" | 088-"OPAL"
028-"SINK" | 060-"VASE" | 092-"LOCK"
032-"DAVE" | 064-"RING" | 096-"SONG"
036-"BIKE" | 068-"PILL"
040-"IRON" | 072-"GIRL"
100-"SAFE" | 120-"TREE" | 160-"VASE"
104-"FIRE" | 128-"SINK" | 168-"PILL"
108-"WORM" | 136-"BIKE" | 176-"SPOT"
112-"LAMP" | 144-"BIRD" | 184-"PALM"
116-"LOCK" | 152-"TAPE" | 192-"LOCK"
200-"SAFE" | 232-"HAIR"
208-"WORM" | 240-"SIGN"
216-"NOSE" | 248-"MYTH"
224-"EYES"