i just played through this and by god, this may be one of the greatest Valve fan games ever. i cannot wait for the next update. the potential for this is absolutely massive, i imagine that the fourth section (using Majik cards likely) would be dota themed. the only real criticism i have is that the voices aren't that good, it'd be better (in my opinion) if instead you have a sound effect or instrument that fits the character speaking. like when when Glad0s is talking have computer beeping or for spy have like a violin.
overall i rate this game a 8/10 and i can't wait for more content