Anything...please!The atmosphere was sharp and super-focussed.
what can I say instead of super-focussed?
Seriously. If you sincerely feel you need something beyond focused—that focused just doesn't quite do it for you, make us feel it in some other way.
The absence of context limits the range of suggestions, but here's an example of what I mean:
"The atmosphere was so sharp and focused that when Johnson cleared his throat, he may as well have thrown a cinder block through the window of the conference room."
"Don't say the old lady screamed. Bring her on and let her scream."