We use PANS-OPS approach charts and as far as I am aware there is no level segment built into the Missed Approach Procedure. It's 100ft clearance plus 2.5° to the MSA.
If you can't make 2.5° to the MSA for whatever reason, then you have to raise your MDA/DA until you can. Some approaches from our ANSP have exactly that: two different minimas for different missed approach gradients.