New update is uploaded and will be available in store during next week. This update fixes few bugs. Including one with autosave during tutorial.
It's pretty long and when you beat the game, there is additional characters to beat game from the start, or you can try two endless modes (legendary dungeon and endless dungeons).
That is such a subjective question as to be almost impossible to answer. Whatever floats your boat with RSK might be totally different to another persons likes or dislikes. However with that said, both use a very similar style of gameplay, with the tap a tile to reveal what is under it. Apart from that, the games play quite differently. I have both and enjoy them as much as each other. Though unfortunately I doubt that will help you at all.
If by runes you mean the items next to your gold then they are used to make higher tier gems. Also regarding relics; Yes, they are available via iap. There are a total of 12 relics available to buy via 3 iap packs. You can choose and equip a max of 5 relics when you first start a dungeon. During gameplay you will also be able to find more relics (if you have previously purchased them) from some treasure chests. You can only equip a max of 9 relics. You don't need to purchase any relics. They simply make the game somewhat easier, but they are not at all necessary.
I'm enjoying this. The rogue is fun to play witha very different kind of strategy. I'm wondering what the wizard is like...the northerner and knight don't seem as interesting...in particular with the northerner, you want to get a bunch of enemies on screen but then you have some enemy's that will attack you unprovoked. I'm finding it really hard to block the axe types hits. Notes in any feedback on how close I was makes it trickyis my agility too low or is it my timing? I find that a little frustrating. But overall, great game.
New Carbomb Software game is on steam http://store.steampowered.com/app/416060 Trailer: https://www.youtube.com/watch?v=mKAVrGVLMQ4