I found some in:
Desert: Behind one of the back frames
Village: Somewhere on the hills
Hell Castle: in one of the windows
Parallel: behind one of the pillars
I got 3 stars on every available level, here are my picks:
Favorite: sky islands
Least favorite: winter island (barely got kill the...
if you have a short range weapon and the prototype, hold the short range, the people might get in a line far away. (only in team battle) then switch to prototype to shoot all of them
Post here where u can go in places u cant normally go, the 4 i know is outside of the map on shooting range and collaseum, i got inside the wall in aztec temple and on the roof in pool party.
Sry i dont have pictures
Mine:
Primary: Peacemaker (fully upgraded)
Backup: Crystal Fast Death
Melee: Emporer Sword (fully upgraded ninja sword)
Special: Prototype/Chain Thunderbolt
Premium: Anti-Gravity Blaster (get to places u cant normally get to)/ working on Armaggedon