It seems like every single day I see a new post/thread/both that says something to the tune of:
"<chamber name> should never ever be built first. <other chamber name> is infinitely superior and it is impossible to win without it as the first chamber. Anyone who builds <first chamber name> first is an absolute moron who deserves to be banished from civilization and forced to eat wild berries and live in the kingdom of the moles forever."
Interesting. Open your eyes, alien players! There is no "ultimate super uber godlike unbeatable upgrade order." Player A plays better with defense chambers first, great. Player B might like sensory or movement. Get used to ALL types of chambers, and not only will you be useful in MUCH more varied combat situations, but you won't have to go and whine whenever you don't get the only type of chamber you know how to play with first.
Quit limiting yourselves!
Def = Sens = Adren, you just need to make your play style adapt a bit and realize it.