i could have or would have worked on other options, but i never got that far into the game, which takes awhile to do. at any rate, i would tell you to send savegames but i think that they might not be shareable. at any rate, if i had save games with some of these option requests and ready to go then i might can look into it-
send to pwiz or message him as i do not check these forums all the time.
best,
Cal
Savegames are shareable, but you have to disable Steam Cloud.
Here is a 100% savegame: www.ngohq.com/games/20131-duke-nukem-forever-all-chapters-unlocked-savegame.html
For weapon overheat just load Vegas in Ruin and use the mounted weapon.
For car turbo overheat load Ladykiller or The Mighty Foot.
For underwater breath load The Clarifier or Blowin' the Dam.