skelli archers don't matter if they have 8 hp they receive 50% less damage from ranged attacks since they are bones
level 1 unit is obiously the peasant (this little bugger will get attack 60 in no time which means QUICK CRITICALS
level 2 hmm dunno really.. i hardly use them
level 3 royal snake
level 4 SHAMAN best unit there is :>
level 5 black dragon