Ok, so based on Dr K's comment I have found a patch that makes Keen jump the very soon after the button is pressed. (Instant jumping doesn't work.) The first line is the length of the pause, the second line is the jump speed. The product of the two is Keen's jump height.
Code: Select all
#Keen jumps instantly - Keen 1
%patch $3BAC $0023W
%patch $3C25 $0004W $7C
#Keen jumps instantly - Keen 2
%patch $69EE $0023W
%patch $6A67 $0004W $7C
#Keen jumps instantly - Keen 3
%patch $7251 $0023W
%patch $72D3 $0004W $7C
Huzzah!