Keen: Modding

I'd like to use Keen as he appears on the map in the regular levels, too. He would still interact with tiles (points, hazards etc.) and creatures (at least deadly ones) as usual, but otherwise behave exactly as in the map level, including walking (or "flying" then) sprites. I'd prefer a patch for Keen 1 or 2 over 3 (if this is possible at all).

Ok, this is really, really tricky.

By default the game changes 'player mode' when Keen enters a regular level. You can see that with this patch which disables the level entering and just leaves the player switch:
So what will be needed is to reprogram Keen's level behaviors to imitate those of Map Keen. This is possible but will take some time to work out. It is likely a Lemm level patch.

Thanks for the information and the patch! Even though a mod would have no enemies then, this offers really interesting possibilities, e.g. a level where one has to switch between two characters at various places to succeed.