I'm going to post my solution:
I charged my pow, then used it to unfreeze the scritters (after collecting coin by the two spikes), then blew up the barrels in my way to get coins. I didn't collect these coins, yet, though.
Then, I charged my Brr and chased the scritters on the 3 buttons and froze them (3 brrs). If your quick, none of the ice will break before your done, so scritters will stay on buttons. In the process, I chased 2 scritters down the hallway, and one goes on the light blue button.
For pink button, I used 3 brrs to maneuver spikes. Freezing a spike on the pink button allowed me enough time to get key.
With the last 3 Brrs, I made a bridge (there and back) to those upper 3 gold coins, made an ice bridge to reach the blue gems, then went and charged my blink. I used the blink to collect everything else, including blinking to the dark blue button and back to open the gate.