MINI NINJAS
35 Achievements
1,000
10-12h
Silent Assas... Ninja
Complete a level without being seen
50
How to unlock the Silent Assas... Ninja achievement in MINI NINJAS - Definitive Guide
So, here it is (on the level Great River Canyon):
Easiest on Level 5 - Best done after completing the story!
Simply complete any level without being spotted by a single enemy. The easiest place to do this, is Level 5 "Great River Canyon".
Follow the same path as shown in the video and you should have the achievement on your first try!
Here is a video that you can watch to avoid getting detected easily.
This one is actually very easy if you do it on the level "Great River Canyon". Using the "back route" head up waterfall rocks heading to where you got the first spell in the level. Take the path towards the bridge that has some samurai guarding each side. You can drop down into the water before the bridge out of sight of these enemies and past the rock wall that blocked your water passage from down below. Once in the water, hug the right side of the lake and head towards the rapids. When you've made it to the rapids, you're in the clear as there are no more enemies in the level after that point. Now, just finish out the level.
Video: https://www.youtube.com/watch?v=x7kT0pcaYT0