Basic tip - to earn points quickly, go all-out attack and just last as long as you can without taking damage to your fragile tower. When you're ready to go for a long run at many levels, go for all-out defence (esp. 'Fortify') and resource bonuses, and let the HP and cash build up for as long as your patience lasts before switching to killer.
Most important thing to remember - you can repeat the drill to go deeper and improve finds without having to return to the surface. Second most important tip - don't drill further than your drill can cope with. Broken is broken.
That awkward moment when you realise all you are doing is logging in to collect the daily reward, waiting 5 minutes to collect the chests, applying duplicate card upgrades, then leaving. But you still come back.
Duplicate cards drive me crazy. Wish they gave some kind of value. Even a tiny incremental bonus to the chance for higher quality chests. Eg. Each 10 common duplicates = 1% chance that common chest becomes uncommon, and so on with each level.
Lessons learned the hard way - never, ever, throw away any Lord Sword you get. They work on bosses and become so incredibly useful against the huge and deadly late bosses. By then anything except top bosses is not a threat anyway.
Maybe give Bosses the ability to do all their damage to one adventurer, instead of spread out. So instead of '15 damage to 8 targets' it is '15x8 damage to one target'. Would make bosses always stay dangerous and add a tactical aspect favouring group-spacing. Maybe even a related boss-bonus for fighters, if practical?
If you want to make this game a challenge, set your mind to conquering a province every single turn. Suddenly you need to really carefully balance conquest and development.
You win this game by hire 100 of the appropriate unit for each step of the campaign, then clicking repeatedly on the 'attack' campaign button while the 'hire 100' box is marked. Do that a few thousand (tens of thousands) times and win. Everything else is window dressing.
I keep expecting to receive a chest full of baloney, or left-handed pirate hooks, or out of date ticket stubs, or to be attacked by giant sea-chickens.
Put a fast, powerful unit on an empty row (best available cavalry). With luck, it will kill one or two new opponents before reaching the other side, then it's health is restored. Can get through a lot of battles with very few casualties, and invest all your gold in cavalry improvements - ignoring the other weapons saves a LOT.
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