Quick update:
Finished the last 5 tile sets for the total of 30. The final distribution is:
Planets: 6
Castles: 2
Temples: 7
Spaceships: 7 (6+1 special different tiles)
Tunnels: 1
Mines: 2
Droids: 5
The game is now fully playable until planet/mission 12, with all relative 12 enemies working.
Also:
added 4 new unique missions.
Implemented 3 new powers for a total of 4 out of the final 8.
Finished shop 3 which leaves only 2 for the final 5.
That's it for now.