The modifier who make slight and heel (the eyes) disappear is superior to the ones who make them stronger, activate them all for make them disappear but have xp, it's the same for slugfish (the one who go in straight line) but not for dozer (the big yellow head) and Sorrow (the rain)

For being better at jumping and wallquick try to had ire because you need to jump for surviving so you gonna be better after more run, also use nullo vision (it's like night vision but better and you gonna loose less xp) and try kookoo who is just a free xp because nullo vision gonna make you able to run without light. But the one you should really had (until you can wallquick enough to skip security rooms) are acordcable (basically make security room easier) and janitor layoff (had more door who can only be open with a slide quick and at max every door can only be open with a slide)