I do like the unlocking stuff as you go and tring new stuff out. But ever since 15 it just seems to b ea terrible grind. Getting to wave 16 takes at least 30 minutes and gives 3000 xp, and having to do that 4 or 5 times to get to 16 is 2 and a half hours at least.
Does anybody else feel that it is a bit too much xp to have to get now?


