Hey, thanks for playing & the feedback too! An “auto aiming” weapon has been on my todo list for a while, so good shout on that one :) I’ll try to add it soon.
Look for brown chests spawning around you: 3 of them spawn when the “Need some healin’?” wave starts, then 5 more at the “Incoming healing crates…” wave, after that they sometimes spawn along with enemies. You have to destroy the crate to get the health drop.
I couldn’t reproduce the health upgrade / healing glitch, but I’ll keep a lookout for it (although maybe it’s possible you picked up a health drop right before or after the upgrade and that caused the healing?)
Keyboard movement (with WASD or the arrow keys) should work, can you tell me what device / OS / browser you used? Maybe there’s a platform specific issue I can go after.
Thanks again for taking the time to play & comment! :)