How can I beat the heat

Hint 1 of 4:

Did you visit the card-vending Fester of Ortega yet?

Hint 2 of 4:

Did you purchase the thermoweave underwear?

Hint 3 of 4:

You better put them on quickly, or your mass will be gas.

Hint 4 of 4:

Cross the shaking bridge away from the east edge.