I would have to say the wall jumps are Ninja Gaiden inspired. Retired after getting 2 of the mini triforces. I know it is possible, just not enjoyable.
This game is on sale on GOG.com right now for a 24 hour period. Get your copy of Defender's Quest, for only $2.49 until Thursday, February 20, 10:59AM GMT.
http://www.gog.com/news/indie_gem_promo_defenders_quest
 "The Valley Rule"){kind=icon}
 "Defender's Quest (lengthy!) Demo"){kind=icon}