Level 12 boss was way harder than the rest. I was only able to beat him by fully upgrading the wall. A tip for those having difficulties with the game:
An elf archer, knight and someone to repair the walls is all you really need to beat the game. Some basic archers on the wall would also help fend off the fast enemies. Other units are just sacrifice for the incredibly useless "holy light" power.
The save system is quite annoying especially on hard levels, because repairing and upgrading each structure every time you lose gets repetitive. And I find the amount of guns overwhelming, most of them are useless. Otherwise good game.
Swaintastic
Dude! You just completed the Swaintastic achievement in SeppuKuties and won the Swaintastic badge and 30 points!
Tip:
Stones and skeletons glide (very slowly) when you stand on them.
Lost lives on:
1-3, 1-4, 2-2, 3-3, and 5-2
Got the card second time around. I was quite surprised because I didn't know what wave it was even when the game was over. This game has a nice concept, but really extremely poor execution. I'm never going to play this again.