u only need to spawn lvl 1 warrior and lvl 2 archer and upgrade them and use the pirate to gain resources and u beat all levels easily + to keep this alive
1) level is way too long 2) hard to get skill points to upgrade 3) gems are really good and need more combination to give u tactical advantages. good game 4/5.
It would be even more thrilling and harder if there is a count for the number of smashing along with number of collect stars EX LVL1 Best: 3 stars & 2 hits