-When you find Meryl on patrol in the office, she runs to the women's bathroom. Follow Meryl into the Women's bathroom and reach the final stall in under five seconds. Meryl will be caught with her pants down during an FMV sequence.
-Look in the vent right before the DARPA chief (Decoy Octopus) to see Meryl doing sit-ups. Leave the vent and re-enter and she will be doing one-armed push-ups. Repeat and she will be doing leg stretches on the wall. Repeat one more time and she will be doing the leg stretches while pantless.