HOW TO PLAY- [space] = shows map. green = bacteria/stick figures. purple = keys (required to beat game) and yellow = smilers whilst also showing the map. (btw green arrow is you) you need to touch the keys in order to beat the game, just simply touch the 20 keys by moving into them, controls are W.A.S.D and arrow keys for movement and perspective. in bottom left and right corners, you will see your health and key stats, if health reaches 0, you lose, so make sure to keep a high health level. key numbers go down with the more you get the keys, so your attempted idea is to bring down the key stat to 0.
credits to @IbnuScratch for OG game, and to @GriffPatch for the inspiration IbnuScratch previously mentioned.