I am going to make it short and tell you exactly what you asked for(assuming by saying rugged phone you already taken durability and ip68 ratings into account -
-Well optimised software,like current one on mix
-good quality camera as this is the area where most rugged phone won't do so good.
-high internal storage as we don't need to pull out back door often.
-hi accuracy GPS,high signal receiving strength and power full flash lite ,sos ptt switches in convenient location.
-little rised rubber to protect glass screen (weakest part of rugged phones)
-bump around camera to protect it.
-glove/wet hand auto detection
-not too bulky design
-type c charging with power bank feature
me parece una buena idea q tenga led de notificaciones, que tenga una buena bateria q dure todo el dia y q a la vez sea liviano, que tenga una buena memoria ram.
que tactil sea minimo gorilaglass 4
Helio10 MediaTeck processor, front camera with LED flash, dual rear camera, 4Gb RAM x 64 ROM expandable to 256 Gb, Gorilla Glass 5, Android Oreo, fingerprint reader, a custom Doogee Rom, 4G/5G. Dual Sim
6 ", unibody, 5000 mlhmp battery, metal body, red color, protective housing, fast charging, all curved screen and no frames,
To be honest the phone is a real Monster of performance BUT u can add slow motion to videos taken by the camera giving it really smooth preformance where u can see small particals of videos and maybe face recognize for more securitl y don t think this would be much trouble with 21.0 MP camera Still REALLY NICE JOB FOR THAT SMARTPHONE THE STRONGEST AND MOST PREFORMANCE I EVER SAW