A shader that turns everything you choose to be transparent while the player is behind it in the player raidius.
A smart enemy: Can defend himself, by dodging away from you're attacks, both melee and ranged attacks with tutorial.
Actually Random already did this but has alot of bugs. Altought i already played it about 25 times and only managed to beat the guy once x)
or something like this x)
http://www.youtube.com/watch?v=tk6vc6FIo6Y&feature=relatedTutorials (video) like unity has or better.
Gamestudio lacks alot of tutorials. On the other hand has alot of real example scripts.