I think boss battle only will be available after release, will be added along with the update. Basically, everything you listed can be added after release. But even now, depending on the difficulty, some enemies disappear/appear, their projectiles behave differently, etc. Including parasites appear after the death of zombies, that is, it is already in the game, just not represented in the demo
223 days ago (+1)
Hello, hello, maker, are you there? I spent two days creating this, kind of improvising.
Name: Broodmother Monster Truck
is a truck parasite that can breed prototype parasites. Due to the "monster truck's" maneuverability and off-road capabilities, these monsters spread parasites around, but when a vehicle rolls over, its tentacles can extend from between the wheels to pull itself up.Inside the cab is an egg sac, which throws other parasites from under the chassis (possibly the same ones in the corpse). However, this is only the lowest level nest mother and cannot give birth to stronger parasites.
220 days ago(+1)
Use whatever you like, I'm just improvising. Just like Help 198X and other pixel games, my English online name is "CODE-75", but I later lost my account and could not retrieve it, so I changed my name to "No Name 1986"(1986is nes year)