Legacy of the Moonspell is superb. Honestly, this one's worth it just for the new map alone, but it also comes with a stack of  cool new characters and weapons. If you already buried yourself for hours in Vampire Survivors and it's finally starting to get stale, this DLC will give it a breath of fresh air. 

Tides of the Foscari is another worthy addition to the Vampire Survivors franchise. This one comes with another large and interesting fantasy-themed map that features a maze, amongst other interests. There's also three new characters, some new (and flashy!) magic-based weapons, and a cool new mechanic in the Academy Badge.  If you (like me) still can't get enough of Vampire Survivors, this one's an easy purchase!

This DLC is all kinds of cool.  I never spent much time playing Among Us but I love the concept and it's one of my kids' favourite games.  Emergency Meeting is a fantastic cross of the two games so any Among Us fans are going to love it.  More importantly, it's an awesome DLC in its own right.  The new Polus map (the Polus Outpost map from Among us) is decently sized and one of the more interesting maps in the game, with its own map, relic, and coffin to collect.  And of course there's music from Among Us to really set the mood.  What's really cool though is the 9 new characters and 15 new themed weapons. The Emergency Meeting (ultimate upgrade of Report) is particularly cool ("who is the impostor!") and having little mini crewmates and skinned hats and things flying everywhere is super fun.

Operation Guns is a massive DLC and totally worth the price even if you know nothing about Contra (and of course there's a huge nostalgia bonus if you are familiar).  It comes with two new maps; the main map is huge and I think one of the most interesting in the game with different regions separated by bridges, buildings, secret passages through forests, and of course it's populated by hordes of Contra baddies. The big mecha bosses are particularly cool.  Also, Operation Guns comes with a whopping 11 new characters (and of course I absolutely love Bill Rizer with his long gun), and 22 new weapons - machine guns, homing missiles, and some cool new passive upgrades that don't take slots. As if that wasn't enough, there's also a new adventure.  Oh! And the new music is bangin'!

I feel like I probably say this every time but Ode to Castlevania is my favourite DLC for Vampire Survivors.  The map is huge, and also gated out the wazoo. You'll have to explore and defeat bosses in order to collect artefacts that allow you to open new doors and access different sections of the level. There are also a stack of hidden rooms and passages and the level features far more enemy variety than previous maps so it stays interesting.  It doesn't matter if you're playing through with end-game characters, it'll take multiple runs to collect all the hidden goodies and beat the map. Everything about this DLC is big - 20 new characters, 40 new weapons.  And I guess the team is running out of "simple" ideas because these ones are a little more complex than we're used to. The Alchemy Whip, for example, strikes in three directions. When evolved into the Vampire Killer, it also creates holy light blasts that only target bosses. Oh, and one unlockable character can create familiars that follow around and attack with you.