You could kind of say that? In Martyn's POV, it's heavily implied that in lore this whole thing is a forced death game, put upon them by higher beings- the Watchers.
Not on purpose but there is a desert in Third Life and Secret Life, which are where bunnies are often found in minecraft. It's possible someone could accidentally hurt one by mistake but I don't really anyone killing any rabbits in any season so far
There are multiple deaths by drowning- however because it is a video game there are no visible or audible signs of this other than a health bar decreasing.
In season 1, someone is beheaded in a ritual. However, this beheading is largely implied, as game mechanics do not allow someone to actually be beheaded, so it is not graphic at all.
People have had anvils dropped on them but there have been no anvil related deaths so far. Most of the time people just take a good chunk of damage from it
There are occasional jokes where the top of a hole is blocked up, trapping someone inside for a short period of time- however, none of these are fatal and the person is always let out after a few moments.
Technically, in Double Life, a character is described to have died from strangulation by their content creator counterpart. However, this is non-explicit and cannot be portrayed in Minecraft, and is only confirmed in extra-canonical material featuring fanart depicting the death as such.
Scar turns red from falling in Season 1, Episode 3, in addition to falling into the Southerners' trap in Season 2, Episode 5. There are also several fall damage deaths in season 4 thanks to a faction's sky base.
One of the POV characters does this in both Seasons 2 and 3.
It's a non-lethal variant in Season 2 - on the second-to-last day, they are cursed to murder someone or lose a life, but they refuse to play by the curse and sacrifices a life as a result.
It IS a lethal variant in Season 3 - in the finale, they detonate themself so that their soulmate can win the season.
There's always one person left standing at the end of each season (aside from S3, where there was two, but even that was only because of the twist of the season), so this is somewhat required regardless of what POV you watch.
In Season 4, Cleo and Etho are depicted as Bdubs and Scar's parents, although one is consistently absent. There have also been comments about Grian being Jimmy's father, although those seem to only be jokes. All of these characters die numerous times.
In Season 2, Martyn continuously hears an ominous voice in his head, egging him on to doing its bidding. However, it's more of a manipulation than body or mind control during that season. Only in the season 4 finale does this entity completely take him over.
Cleo is a bi woman, but I don't believe her relationship with Scott in Season 3 is ever romantic nor cheating, as she never actually begins dating her soulmate, who is Martyn.
this is a technicality overall yes, because it varies so heavily on whose perspective you're watching, what series/ep etc, that itd be a major task to track every instance. so go in assuming theres a probability for them, especially later into a series when more deaths start happening
TNT explosions happen multiple times throughout the series, most notably in Season 1, Episodes 4 and 7, as well as Season 2, Episode 9 and Season 4, Episode 6.