Am I missing something with warlocks or is the game fucking up? At level 12 Wyll has 1 1st level spell slot, and 3 5th level slots and that's it? So if you want to hex stuff you have to burn 5th level slots to do it? He seemed to be getting spell slots for each level of spells as he leveled up but they just don't ever actually exist outside the level up screen?
Edit: went and read the 5e phb and yea i guess this is just how warlocks work. Seems really fucking boring to just be an eldritch blast machine, even if it a ton of sustained damage
warlocks are a ton of fun, but i admit they aren't for everyone. they have very few spell slots, but all their spells are super charged to up to 5th level. those slots come back on short rests so depending on the group makeup, you might be taking a ton of short rests, or your the one guy in the group going, uh, can we PLEASE take a short rest?
at lvl 11 and every 2 levels up to 17 they get mystic arcanum where they can pick a single high level spell to cast once a long rest. so, 6th level spell at 11th level, 7th at 13, 8th and 15 and 9th at 17. there are certain spells that are really designed to be upcast, which makes them perfect warlock spells. armor of agathys, for example gives 5 temp hp, and if they get hit in melee, the attacker takes 5 cold damage for as long as the temp hp holds, all of that is per level. so at 5th level, they have 25 temp hp and attackers take 25 cold damage, even if the attacker only does 1 damage.
another one is witch bolt. in any other caster's hands is sort of a lame duck spell, but because warlocks can cast it up to lvl 5, that means if it hits the first round, that spell is doing 5d10 lightning damage per round as long as the warlock takes an action to use it. he doesn't have to make an attack role, he just has to use his action to do 5d10 lightning.
it may sound goofy and boring, but it legitimately means that a lvl 11 warlock can cast 9 lvl 5 spells per average adventuring day. any other class can only cast 2 lvl 5 spells and 1 lvl 6 spell per adventuring day.
early levels it definitely feels like as a warlock the only thing you are doing is eldritch blast, but mid level? no one likes using their turn to cast a lvl 1 spell at mid level, meanwhile warlocks are tossing out 5th level spells all day long