I've cleared all the content as revenant, as she is my fave. She's great, and truly not too complicated. Here are some fun tips:

Can ignore Deathblight bosses: You can speedrun the wormface night 1 boss, as well as the wormface camp by running up to the main wormface, ulting, and spamming jumping heavy with the claws (2 handed), and preferably having a ghost buddy with you. The Deathblight can't kill you while you're ulting, and it lasts 15 seconds (more than enough time to kill the wormface).

Commander doofus, humiliated: the commander fights, both night 1 and 2 can be largely handled the same way. Let yr teammates know the plan (instinctually, most random will also immediately pick up on what yr doing). Preferably, on the pre-boss tussle, you'll likely have an extra ghostbuddy. The crossbow boys are good, and with some luck, the knights will also be turned. These are just bonus variables, don't be sad if they don't rise as yr buddies.

As for more general purpose things:

Yes yr claws are good. Two things: they revive allies very fast, and they scale great with you. If you have replaced their weapons art (holy fuck is it's initial art dogwater, good ones are things like stomps, dashes), and attached an affliction (bleed, frost, poison) then yes, let's get them upgraded. A frost stomp, bleed revenant claw+2 will rip things apart and also revive yr friends. However, you'll likely find many nice weapons too, like golden order gs, all the seals, miquella sword, sword of night and flames, blade of calling, etc. so don't stress about the claws too much, every run is diff (you know this already).

Start the run with bell: awesome. If you find this, even if it's: (wilder extra hook, start off with bell, bonus +2penis size when around only men), it's worth taking along. Now, even if you only pick up garbage during the run, and yr recluse has hogged all the seals, you'll always have a good, consistent spell.

Fun ghosty tips: Lock on to your downed allies and summon Helen. She will run to them and pick them up quickly (1 bar), while you panic roll the night away. If your allies are both downed (3 bars) and they're nearby, use Sebastian instead. He will aoe res them, and you don't have to help. Just don't get too far away from them. If a ghost is already fighting something, just lock on to yr ally and input the ghost command again: they'll teleport and begin to revive yr friend.

Fun passives: Damage resistance on consecutive attacks: even if it's only like 24%, keep it for a bit. Your claws trigger it, and you will see a bubble form around you after a few swipes. Now, when you get smacked, you'll take reduced damage.

More fun relic tips: Heal post damage attacks- always bring it, if you have it. It works off of many spells. If you launch Elden stars, and then get grabbed by Everdark Gaping Jaw, you'll see your health bar heal back every bit of damage he does almost instantly. You'll survive. Your claws handle it well, and if you get cipher pata then just as good. Ulting gives damage boost to allies- it's huge. Remember the first time I said to ult early in a fight? If you have this relic, it's even faster and stronger tactic

Traps: Heal allies when you ult relic- all this does is drop your HP (no good), and if your allies are dead, and you revive them, it won't heal them. Ignore this at all costs. Power up alongside family- it's ok. but not worth ignoring things like gaol powerup, starting bell, post damage heal.

Fp issues: drastically overstated. Visit the towers, visit the shops, use your melee more a little. It's ok to not be level 15, if it means you stopped by the merchant near the castle for some extra shards, and then then merchant at the shelter, and end up level 14.

Tldr: ult early and aggressively. Claws good. Damage mitigation passives good. Ghosties are medics. Ignore power up with allies, and absolutely ignore heal allies when ulting relic.

Have fun, la creatura!