Player Help: 4 man shooting band

[RavensLuck]

Hello, I wanted some advise for our new campaign in the event of an ambush.

Our party consists of:
Human fiend warlock, who wants to multiclass wizard
Yuan-Ti wild sorcerer
Human gunslinger
Human archfey warlock (me)
We all start from level 1

Setting:
Session 1 will begin as a mercenary recruitment caravan along a coast, before going inland, where we find the mercenary camp full of dead people. The environment is a rainforest/jungle.

Given how all four members seem to be ranged fighters with no melee capabilities are there any contingency plans that could prevent our entire campaign from ending right from the onset?

[Kadesh]

Um... Not really. Once you get repelling blast, you'll be slightly better off, especially against lone enemies to Crowd Control them.

The Gunslinger fighter of it doesn't have XBow Expert really should, and it should remember it is still a fighter and can take a few hits on its D10 hit dice.

The warlock/wizard can animate dead at warlock 1/wiz 5

[RavensLuck]

Um... Not really. Once you get repelling blast, you'll be slightly better off, especially against lone enemies to Crowd Control them.

The Gunslinger fighter of it doesn't have XBow Expert really should, and it should remember it is still a fighter and can take a few hits on its D10 hit dice.

The warlock/wizard can animate dead at warlock 1/wiz 5

Cool, thanks