Swarm's Subterranean Lab pits you against some of the most dangerous enemies in League of Legends mode, all ending in a boss fight against Bel'Veth. Due to the caliber of enemies on this level, many consider the lab to be the toughest map in Swarm.

If you're having a hard time, here's a walkthrough that will show you exactly how to beat the Subterranean Lab in League's Swarm.

The Subterranean Lab will test all of your skills, spawning hordes of Primordians, Elite enemies, and Bosses all at once. If you struggle with these waves, you can always upgrade your stats with gold between matches.

These upgrades make it easier to complete the level, but there are still important gameplay mechanics you must follow if you want to survive.