new boss maybe, or a tremode enemy and the player is using a hardmode weapon, new lightning orb weapon, which obliterates zombies apparently, revamped tiki totem fight, with a new armor that looks as though its dropped by the actual totem, a new plague doctor boss, obviously centered around the new alchemist class, new summon weapon, magic weapon and armour (and god mode? what?), ice biome boss that looks like its icicle bullet hell (just like cryogen!), some spinning boss that's a robot (cyper lord mothership return?), space whale boss from a while back, minibosses, possibly blood-moon exclusive, arkalis upgrade, terra summon weapon similar to the grealm sword staff, (is that a new frost legion enemy), the stone boss from a while back, in the paradox cohort event question mark?, a one-second clip of a blood moon and new weapon, revamped cog lord figt (finally I can fight this guy legit), lastly, a new flail. all in all, there are a lot of new armour sets, and overused sword that rains other swords, the night of the undead is not shown however, but tons of things aren't shown, like that 'trinity' boss I heard about a while back