Hints:

Extra credits:
     When you finish escorting a ship to its destination, stay with it
after  you  are paid. The ship and the others will destroy enemies for
you,  leaving  credits  behind.  At  times, you can receive 200 to 300
credits before returning home.

Continue game play:
     Press  Start  on  controller two immediately after your last ship
explodes  to  continue  game play. Then, have player two quit the game
and player one will be able to continue.

Infinite Lives Glitch:
     After  dying  the 3rd time (when you're about to get a game over)
and  right after your ship blows up, press Start on another controller
and  join in with a new character. Your first character will come back
to  life.  Then  just quit with the second character, and keep playing
until you die again.

Starbase Locations
-Allied:                x:-78     y:99
-Terran:                x:-3408   y:2400
-Nomad:                 x:2421    y:14343
-Eldred:                x:13652   y:-5886
-Scarab:                x:-128    y:-9822
-Drakken:               x:12421   y:7476
-Vorgan:                x:-12989  y:-5788
-Secret base:           x:-17650  y:-16500
-Secret base:           x:12340   y:14280
-Drakken Gas Mine:      x:22460   y:6180
-Nomad secret base:     x:-27250  y:30780

Planet Locations:
-Desert Planet:         x:-22998  y:-5327
-Life World:            x:-9330   y:6260
-Ice Planet:            x:-14721  y:-20311
-Dead Planet:           x:8710    y:-18060
-Gas Planet:            x:27421   y:3284
-Volcanic Planet:       x:22421   y:24511
-Infested Planet:       x:-31250  y:34280 

Experience points chart:
     This is how many experience points you need to reach a new level:

Level: Experience points: 
01 0 
02 8 
03 64 
04 216 
05 512 
06 1000 
07 1728 
08 2744 
09 4096 
10 5832 
11 8000 
12 10648 
13 13824 
14 17576 
15 21952 
16 27000 
17 32768 
18 39304 
19 46656 
20 54872 
21 64000 
22 74088 
23 85154 
24 97336 
25 110592 
26 125000 
27 140608 
28 157464 
29 175616 
30 195112 
31 216000 
32 238328 
33 262144 
34 287466 
35 314442 
36 343000 
37 373248 
38 405244 
39 438976 
40 474552 
41 512000 
42 551368 
43 592704 
44 636056 
45 681472 
46 729000 
47 778688 
48 830584 
49 884736 
50 941192