If you have Pro and are OK with the blood splatters being dark red circles coming from the body, then I recommend making a particle like this:
blood = part_type_create();
part_type_color_rgb(blood,128,160,0,0,0,0);
part_type_life(blood,60,90);
part_type_direction(blood,0,360,0,0);
part_type_speed(blood,4,6,-0.25,0);
part_type_shape(blood,pt_shape_disk);
part_type_size(blood,0.08,0.12,0,0);
Then upon dying, have the character spawn about 20 or so of those right where he is. I'm including the .gmk file (within a .zip archive) that I used for testing.