Disclaimer: if you came here just to say "oh you dumbass tf2 is dead, boomer" then please, go commit f urself (jk, but get out anyways)
Scout: Often uses Scout armor(duh),with fast firing weapons or close range shotguns, running around and dodging every single zombie ranged attacks.
Soldier: Knows a lot of shortcuts and ways to get into high places, but because rocket jumping isnt a thing in R2DA, there's nothing much else to try and to do.
Pyro: uses Flamey all the time and burns everything, simple.
Demoman:Uses RPG and explosives all the time, also very simple.
Heavy:Often uses minigun with bandolier, or M249 with bulldozer, sometimes another automatic with one of the Xmas Capes
Enginner: Uses M2 Tripod and builds a base that makes him survive for over 5 minutes
Medic:Always equips Defibs or Medkit, and gives other people Pi- I mean Vitamins, using the Flag and acorns very often.
Sniper: Uses Barret or Winchester, and stays at one spot the whole round, using Miniuzis or Peacemakers.
Spy:Can escape zombies very easily, Always almost amonsgstdwhuadjuad(rip gramar) the last last survivors,but since there's no disguising or cloak, they most use camouflage skins, like green,trying to "disguise" as a zombie
Say which playstyle fits u the most in the replies(also if ur gonna say the say tf2 is dead please watch this while NOT using headphones at 3:00 am on max volume:https://www.youtube.com/watch?v=IoAnbHW8TFs)
Also to answer this question u need to obligatory watch this vid:https://www.youtube.com/watch?v=_sHPisa06JE the way you wish to