I've been playing solo with a Ranger character, and you don't even need high stats to be really successful in combat, thanks to colossus slayer, and the combination of only one spell is all that necessary due to how the game is built. Fog Cloud. If you cast that spell, you can use your bonus action to stealth inside the cloud, and every turn, enemies can't target you. You can even step out of the cloud, make a ranged attack and step back into stealth, and you become unstoppable. This also works really well with Druid and Wizard btw.
Additionally, if your ranger sneaks up to a group of enemies and just casts fog cloud on himself and the enemies, you can just start swinging on all of them inside the cloud and never initiate combat, I was able to kill every enemy in the game and several targets never even started combat when I used fog cloud. This means even if they set up enemies with counters to the fog cloud spell, if combat is never initiated, they still can't do anything about it.
The only class I can't recommend to pick up this strategy is rogue arcane trickster, simply cause the fog cloud is a cloud of advantage/disadvantage, and having disadvantage for any reason disables sneak attack.
Last edited by Zaxtaj; 04/03/21 05:45 AM.