Really interesting and enjoyable!

The controls were solid and the gameplay actually really fun, despite being so simple. The audio was also really nicely done, as were the particle effects. The visuals needed something a little extra though, even though I do appreciate minimalist games.

Was fun and the tutorial was a nice touch. Got quite laggy when the blue enemies started showing up and ground to a halt for my computer on level 12 which was a shame. Would like to see the idea developed with harder enemies from the start and more obstacles on the map to stop me running circles around the horde!

Ended up playing until Wave 18 where the lag just got too much. I didnt really get to experience the "Playing as Enemy" after circling the enemies in the same box for several waves. I kinda wish there was more an interesting map or upgrades, cause the time to kill felt too long. I loved the particles effects and the music was good, interesting gimmick that I wish I got to experience more!

Interesting take on the theme, but I feel like the difficulty level wasn't high enough to make you engage with the gimmick. 

I got to wave 14 with no issues, just putting money into Speed and Full Heal, then kiting the enemies around the corners. I feel like adding some scaling to the full heal would make death an inevitability much sooner as you aren't guaranteed a fresh start every wave, and encourage the player to take more risks. At the moment there's no reason NOT to take the full heal every round, and - as dying wasn't a threat - putting money into the enemy didn't feel like a real choice.

Otherwise, I thought it was pretty decent. Music was good, theme use was good. Didn't find any obvious bugs. (though the 'try again' button didn't work for me for some reason, nothing impacted the actual gameplay)

Hahaha I leveled my player a bit too much and struggled later but I really enjoyed it! =D