Tip: The best time to use booster is when the top part has launched up from the body. Because the head is a lot lighter, you'll go faster and get more height. Like if you found this useful.
I dunno if other people will like this or if the creator will see this but here is my ideas: There should be starting rockets, which aren't upgraded but are limited and have their own special abilitys (Ex: Pancake: Has multiple layers of engines but weak base engine power* And there should be different upgrades for the rockets that cannot be earned or bought for other rockets. They should keep missions and some of the base ideas of this game, but if you like this please like it, I'd like it if the creator saw this.
How to easily win the game:
Step 1. Sell everything, stop transmissios, the only thing you want to have is the resistince, keep, max those out as fast as you can.
Step 2: Once you know for sureevery reagion is infected, double check and start buying all them traits.
Good luck!