Bat -> Blue Slime -> Snake -> Vampire -> Red Slime -> Hydra (optional) -> Iron Golem (if you dont' have block upgrade) -> Thief -> Yellow Slime -> Assasin -> Flying Eye -> strange robot
If you want more dmg and other upgrades before robot go for:
Zombie -> Skeleton -> Ghoul -> Unholy Knight (this is for minimize pentlity) -> you can kill others but DO NOT KILL Hard Turtle
First upgrade should be 3x dmg, then go for Instakill and 1x speed, next you should take block to speed begining. good Luck ;)
Great game, but please add:
- some way to upgrade units, like bigger knife, etc, 1point per mission or something like that
- description for units and enemies, like HP damage done, speed
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