Rattalion

Rattalion is a blend of rpg-looters and tower defense. Fight your way through three different levels, collect items and build the skill trees to your preferred playstyle.

This is a short vertical slice of the full game that is in development. There is about 1-2 hours worth of content if all levels are completed. 

Multiplayer can be played with port forwarding or if you're on the same network.