Whispike Survivors - Sword of the Necromancer

During a run, each time you kill enemies they will drop experience dots. Sometimes they will drop manure bags also. Each time you get enough experience you will level up. Getting to level 8 is not too bad in this game at all. Getting from 8 to 10 is really rough in the beginning. Again, I've mentioned a few times, just use the farming method in Attack on Whispike (90G) to get a Whispike grown with abilities and have them leveled up a bit. Once you do that just get enough experience to get to level 10 on any map and the achievement will unlock.