Crystal Lizard spawning rules:
* Each Crystal Lizard keep their own counter.
* At the start of game, set all Crystal Lizard counter to 1.
* If the crystal lizard is killed, decrease count by 1.
* If the crystal lizard escapes and dies (by falling off a ledge, for instance), decrease count by 1.
* If the crystal lizard escapes by burrowing, decrease count by 1.
* If a Boss in that world is killed, increase each Crystal Lizard count in that world by 1. For example, in World 2. If you kill all 3 Bosses. Each Crystal Lizard count = 4.
* If a particular Crystal Lizard counter is 0, it doesn't re-spawn.
Respawn notes
* Don't forget after you kill the very last boss in each world, you are not finished with that world. Killing the last boss gives one more Lizard spawn for each, so you can go back and farm all that world's Lizards again.
* Loading the game (use the menu to Load the character you are playing now) revives all Crystal Lizards (and uses up +respawn count) but other enemies stay dead. This is a key strategy for catching Lizards in places where they are hard to approach without scaring them off (like 4-2), or if they are among other enemies. Get to it's location once and kill off any hostile locals, load the game and quickly kill the Lizard and loot, repeat until all the spawns are used up. Be aware this strategy does not work in the last boss level of each world, since loading the game in these places always starts you back at the boss level entrance, not where you reloaded!
