Getting the obsidian armour after the update only takes around 1 hour, and its so much better than any other armour, it gives you t80 hybrid stats+ around 15% damage soak+ 10% accuracy, the dill wave is easy but just takes long. You can use a con crystal on the dill wave, it boosts your lp with 50% and heals 1/3rd of your hp every 5 seconds, that makes it even better than a invulnerability crystal imo