When you think of aggro, you probably picture Zurgo Bellstriker backed up by a bunch of burn spells or an army of Warriors working together to bring your opponent's life total to zero. But focusing on their life total isn't the only way to be aggressive - your opponent's library is also a resource you can try to reduce to zero!
Hedron Crab and Mesmeric Orb do a lot of the heavy lifting, as having a constant source of "damage" is often more powerful and consistent than trying to just use spells burn people out from their starting life total. If we're making the comparison from Aggro Mill to Burn, these cards would effectively be your Goblin Guides.
For "Lava Spikes," you have Archive Trap, Glimpse the Unthinkable, and Mind Funeral. Sometimes your opponents won't play into your Archive Traps, so you need to incentivize them with some Ghost Quarters.
Crypt Incursion is the biggest edge you have against aggressive decks, since twelve life should buy you enough time. Undead Alchemist doesn't have much synergy with Crypt Incursion, but it's fine because those cards are each good in different matchups.