So, i've played this game for a little while now, and i've come to the romulan chapters. What boogles me though, is how impossible certain enemies are. The leuitenant escort ship i had was annihilated by the defender type of ships (larger than the others). I got them to around 50% and my hull sank pretty quickly. Same now for my captain cruiser. I can withstand more damage, but those plasma torpedoes they keep nuking me with makes it impossible and i keep dying. I try to shoot them, but i almost only miss so they end up reaching me. If i go defensive i guess you know as well as i that i won't have enough dps to keep his shield down to do any damage.
I have been ripping through the game up until this point. These ships. I do have 2 hull repair abilities, and 2 shield regeneartion abilities. Science team and engineering team. I focus my shield where i take damage, but you know, when your shield goes away after a hit or 2 it's rather pointless. I pop all my nuking abilities in the start and get his shield down pretty quickly and get some hits on him, but then comes the good 4 torpedoes. 1 high yield and 3 normal. They rip me apart in addition to his constant nuking.
Most people get through them. Try different things, use different boff setups vs Romulans. What they do is known, so are the ways to counter it. Tractors? jamming/scrambling/ polarize hull. Heavy Torps? keep your distance to give time to shoot them FAW / CSV/ TS/ mines all stop torpedoes.
There are many options, you just need to find what works for you. But just doing it the same way over and over may not be the best choice. Good luck