After a wet departing party for some gringos and a long night that ended up at the lokal Tango place in El Chalten, Thomas Meling and I got inspired to make use of the last little window of good weather. We started our hike up to Paso Guillamet after an early dinner and made it up to the bivi well past midnight. After a few houres sleep in the pass followed by a shot of coffee and some Clif bars we started scrambling up the Brenner route in head lights and summited at 8.30 am. We rapped the Amy couloir and were back by 10 just as the wind picked up, just as the forcast had predicted. A mellow lunch at the pass before we raced down the talus and made it back to the Rio Electrico bridge in 2.40 h. Way better than submitting to being hung over and watching movies at the hostel.