Thank you for the feedback! It tells you in the tutorial to press E to melee, and the game's page also has a full list of every single keybind in the game. I should add an on-screen guide pop up to make this clearer.
The fire effects have a bug which has been fixed but there was no time to upload where they spawn endless dynamic lights. This will be patched with an upload the second the rate period ends
If you have an RTX 20XX card the game has a known issue with crashing on the last level. Been trying to fix this but I don't own an RTX card to try to fix it with. Good to know that VR is also an issue, although I have VR fully disabled here. Weird.
The theme used to have a huge role but it was cut for time as it entails making 2x of every level :(