double hit the green flag Arrow keys to move, B to switch weapons, spacebar to shoot, M to turn off/on music. Your character is the blue circle. small, red circles move fast, but don't hurt much or have much survivability. an arrow one-shots them. small red circles with black around them are actually decently equipped. It'll take more than one shot to deal with them Giant red circles are colossals. they have a lot of health and hit very hard, but are slow and take extra damage from magic. red with black dot is an assassin. they are stealthy and attack at inopportune moments. they move fast and hit relatively hard, but are very squishy. Bow: pretty average weapon. hits relatively hard and has a low cooldown. Magic: long casting times, but the damage is usually worth it. Repeating crossbow: doesn't hit very hard, but the rapid fire is powerful.
Music takes some inspiration from my favorite WoW expac, Legion. feel free to rage in the comments as long as it's related to the above statement or is useful feedback. the username thing is so I don't have to reset the record if I do stuff while designing.