I've been playing tftd, now 1 yr into the game, still could not research advance submarines, armour with flight / floadting capability, alien city and end the game.
Attached is a save game - a battle on a cruiser. Only 3 living Gillmans all under my mind controls this turn, backed by my sonic cannon squad members . Once all three got nailed the cruiser mission ends.
A big plus - i got 3 or 4 Deep Ones stunned at the entrance area. So if I was in lack of Deep Ones in my base storage, it would no longer be so when this mission ended.
However, it was not the case. I tried ending the mission as planned and still I cannot research those choke-point components mentioned above. The game is not going any further for me.