Outside the (kill)box: More cash tac ...

You guys must have noticed getting a coin bonus during a wave for fast clearance, a counter-intuitive practice for high scoring, since you'll be giving up combos. For the Pit however, when I start the map, I run upstairs to the right, put two barricades down to block that path, run down the stairs again, cast lightning and kill the kobolds and sappers before the gnoll's howl. When that happens, I get 600 coins. That bonus makes sure I can start wave 2 with a more set up arsenal than without and I start raking in higher combos from the get-go. The 4x/5x combos make up for the missing 3x on the enemies in the first wave.
 
I remember getting a 3000 coin bonus on Chaos Chamber when I was 5-skulling maps, but I'm not sure in which wave (I believe this happens after a couple of kobolds). I do remember it was downstairs, at the lava. The war mage has a remark like 'break time' or 'that was fun', which he normally says in between waves.
 
I think figuring out these kinds of bonuses for each map and weighing the bonus against possible combos can be key to getting to the full trap setup up and running ASAP. And give archers that desired burning pitch upgrade. HowdyDoody tried to get the cash up quickly with the coin forge on the Baths, but he sacrificed an expensive slot for that.
 
I suspect that packs of kobolds carry the highest bonus with them (perhaps as an offset to their low coinage). This means that maps with kobolds in wave 1 might get interesting again :)