As I said, the game isn't very intuitive. So,
[!]WALKTROUGH AHEAD[!]
- Find 4 shards of an amulet scattered around the map.
- Take the key from the maze at top-right (from the spawn) and bring in to the locked room at bottom-left
- Repair the lever in the maze with 1 iron and take the shard from room that is now opened
- One shard is to bottom-right location with a lot of golems
- And the last one is near the pedestal to the bottom
- Repair the amulet with 4 iron on the pedestal. The seal is broken and the infinite corridor to the right is now finite. You can run away and abandon the only thing you should have been defending, or:
- Head to the bottom-left are again and repair one more lever, which will unlock the area at the top. There are 4 golems, which are pretty hard to beat, so I recommend you to only take the pot and run to the flower
- Interact with the flower to take it with you
- Run trough the corridor and win the game.