Clash at Demonhead is a complex game to say the least. There are
over 40 levels in the game, and they are all connected to each
other. In the network of levels the player must find 6 medallions
and then rescue the kidnapped professor. This is no simple task.
To make things even harder for a (tool-assisted) speedrunner, there
are items available that greatly increase the player's speed, but
in return cost money. This means that the route and strategy must
be carefully planned.
This movie certainly does not lack speed or complexity. The movie
is especially entertaining if you have played the game and know
how hard it is.