Just save frequently and start over if you take a hit.Ĭondition: Cause a rocket sentry to destroy its own rocket when the rocket has been redirected back towards it. It would also benefit you to use a companion cube to repel bullets. Just remember that turrets take a few seconds to recognize its hostile target, so if you are quick enough you can portal in behind them or knock them over before they open fire. Save frequently to make sure you don't mess it up.Ĭondition: Complete the game without ever taking a bullet.
You will need to complete a challenge map with either the least amount of time, least number of steps or least number of portals possible for that particular map.Ĭondition: Once you have control of both portals, only enter the orange portal.Īs the condition indicates-enter only the orange portal. Both methods successfully yield the intended result.Ĭondition: Win a gold medal on a challenge map. This one can be achieved either by grabbing a turret and bringing it through a particle field (like ones covering an exit chamber) or by dropping it in an acid pool. A total of 12 new Achievements worth 200 points.
