Thanks so much for the kind words and feedback!
For that level, the intention is that you have to carefully jump down through the chasm of spikes, collecting the key on the way, and jump again quickly after you land to avoid the arrow. The tileset is misleading because it definitely looks like you can stand on the edge of the spikes, a few people were caught out by this! Definitely would have polished this level a bit more in hindsight.