I'm running into the same issue. I see you have received no response to your post. I am surprised that someone would take the time to create a trainer and refuse to actually describe the purpose of the option. Equally surprised that the creator of the trainer, wouldn't check to see comments on their software. I assume the thought is that it's all self-explanatory. But, clearly, it isn't. Did you ever figure out the options?
There is no Trainer option for 1 hit kill.
Numpad 1 and 2 will give you unlimited shield
Numpad 3 will give your crew infinite health
It would appear most of the options are Defensive in nature. IE you still have to attack.
You can tweak the settings under Editor for damage etc and other perks. As I don't have the game I can't give advice on the individual settings for specific outcomes, so my best recommendation is to experiment. It's entirely possible that there is no option 1 hit kill (we typically call it Super Damage or something along those lines).
Please bear in mind we have tens of thousands of trainers, thousands of users, countless posts a day, and we have a small group to reply. While we try to read every comment sometimes we can't answer every question or it gets buried.
If you can't get the outcome your looking for through editor you could put in an Option Request to see if the Instant kill option is possible to be added to the trainer.
Please use the trainer option request system for requesting new options be added to this trainer and/or vote on options already requested.