What puzzles took some time if I might ask? For future updates/reference.
Viewing post in Invade and Infiltrate jam comments
I think the most difficult was the first one with several control boxes where I actually had to shoot the first one twice. Once I got that, the same mechanic was far simpler to deal with.
It would be nice to have a description of what the two types of bullets do though, since it took some time to understand the differences.