few hints while playing, 1. you can use skill points from leveling up to increase base stats. 2. there is a glitch where ghost foxtrowzer will not follow you if u go to the third stage through the second stage instead of straight to the third stage. 3. you get more stamina by going through previous stages rather than directly to the latter stages. 4. one strategy is to make the front units into tanks(all hp build) and the back units dps rangers(all att and stamina for killing and getting through the stages)
nice little trick to get infinite gold quickly, get ~8500 gold(or whatever it cost to get 1 diamond and 10 cloth), travel to where diamond is cheapest (mine was Tasselfoot, but yours can be a different name) and buy 1 diamond and 10 cloth, buy the last vessel and buy down each vessel one at a time(u should get more money than u spent to get the diamond). rinse and repeat until u have all the diamond is gone or until u want. (+) so others can see
the problem is literally you cant grind it, level ups only affect score and each run starts with beginner gear, if u cant beat it the first few times, chances are you wont beat it at all