Straight after the previous achievement, you will be thrown in to a time based achievement. You have an hour to climb to the top of Nene's fortress. Thats 5 levels, but don't get complacent. There are numerous boss fights at the end of 4 of the levels which eat up time on the clock. The first two major boss fights on levels 1 and 2 take up over 10 minutes easily. On level 3 you will come across the "Shoot the Moons" achievement as seen below (takes off no time). Level 4 and 5 have minor boss battles. Take up approximately 7 minutes of time. Conveniently, there is a save point and a energising point at the beginning of every level. So use separate saves so you can always go back if you fail it.
PS - Don't forget beating one of each bad guy and getting all the chests for to add to your log book.
PPS - Battles take 30 seconds off your time.
PPS - Fighting more than one bad guy at one time will still only take off 30 seconds. So use that circle guys
**times are only an estimate so beware!!**