Swarm, League of Legends's newest game mode, was just released. In this game, you take control of a small character that (mainly) auto-attacks foes for you, much as in Vampire Survivors.
This is a tried-and-true formula, however there may initially be some uncertainty about League's use of it. This is how you get additional passive slots in the Swarm game style of League of Legends.
Where can I find additional LoL Swarm passive slots?
After completing certain challenges that are unlocked as you advance, passive slots are rewarded. A fourth passive slot may be earned by obtaining three different passives in a single game. You begin with three passive slots. That leaves you with two locked passive slots that include challenges that can only be unlocked when you are in Hard or Expert level. You need to get a challenge for each after you do.
If you haven't already, finishing the majority of the maps will allow you to access additional difficulty settings. These are the maps.Subterranean Lab, The Beachhead, The Outskirts, and Warehouse District. Along with Hard mode, this will unlock Matchmaking Island, which allows you to queue up with random people. Expert mode may be accessed after finishing every map on Hard difficulty.
Do more passive slots justify the work?
Purchasing the extra passive slots is well worth the investment. You can evolve more of your five available weapons with additional passives, and you can improve whatever you want with one extra passive. When the time comes for you to use a sixth passive, you should choose one that maximizes the advantages to all of your weapons. Hovering over each weapon will reveal its beneficial stats.