Serious Sam 3: BFE/Broken Wings

In Broken Wings, Sam will need to head to the Mosque of Ibn Tulun for extraction.

Walkthrough
Sam starts in a small alley, with one path that leads forward. When you reach the sniper outpost, you will start encountering enemies, but shouldn't be too overpowering.

Before the second overpass, there is a small battle, which can be skipped if you use a dumpster to jump over the wall. At the third overpass, there's a building that has a spiral staircase - if you're low on health, it's worth going to the top and jumping through the hole in the wall to reach the large health. The exit from the spiral staircase is only one floor up, and it leads to the other street where you fight an adult arachnoid.

Past the archway is a more open area, with enemies scatered throughout. Generally, you want to head left and forward - if you find the area with three broken columns, you can look for a stack of boxes for an assault rifle (if you didn't have one). There is also a wall with an upturned couch, where you can jump onto a metal drum and shoot an electric box to open a speedrun secret. The entry to this secdret is at the corner of the mosque, behind boxes.

If you choose to fight along the outside mosque, it will be a large army after each corner.

The inner mosque will have an attack initially be cloned soldiers and kamikazies. This is then followed by a wave of Kleers and Gnaars. The combat will finish with a battle against a Major Bio-mechanoid.

Secrets
There are sixteen secrets that are credited in statistics. In Serious Sam Fusion, there are seventeen.
 * 1) Shortly after the staring area, you should see a guard post used as a sniper station. To reach it, jump on the electrical utility box, then onto the wall, and jump into the tower over the sandbags.  Contains shells.
 * 2) In the following yard but before the rooms containing shotguns and ammo, look for a dumpster, and jump over the adjacent wall. Contains 10 armor.
 * 3) Before the overpass, there's a ruined building. Use the dumpster to climb into it, and look for some health.
 * 4) Just after the overpass, turn left to the shells. When you turn back around, you see a pill bottle, which is the secret item. Activating the secret also releases a Kleer Skeleton.
 * 5) Around the corner past this overpass, the building on the right has a section boarded off. Smash the planks and collect the electricity and +10 armor.
 * 6) Before the second overpass, turn to the right. The building you're circling has +10 armor.
 * 7) Before the second overpass, turn to the right. The route to the left leads to a caged area where you previously saw armor that you couldn't yet access. Taking this spawns a Kleer Skeletion (Serious Sam Fusion only spawns this on Serious difficulty.)
 * 8) After the overpass, turn to the right, and look for an alley with a shotgun and ammo.
 * 9) After the overpass, there is a dumpster you can use to jump over the wall. The other end of this enclosed region has barrels, over a second wall that allows you to skip a small battle (which you may have already finished).
 * 10) Under the third overpass, there's a plank barricade between both possible entry points It conceals +50 armor and shells.
 * 11) At the spiral staircase, go all the way to the top. There's a hole in the wall that directly faces a large health pickup. Jump to it.
 * 12) After the spiral staircase and before the archway, there's rockets behind the barricade to the left.
 * 13) (Serious Sam Fusion Only) Before the archway, use the dumpster to jump onto the concrete barricade, then jump over the other concrete barricade. This leads to electricity, and spawns as Adult Arachnoid.
 * 14) There's a courtyard with three broken columns. Look for a nearby stack of boxes, and jump over the wall for an assault rifle.
 * 15) There's a wall with an overturned couch. To the left is a barrel which you can use to peek through a small window. Shoot the visible electrical box to unlock a secret speedrun door. When you reach the mosque, break the boxes on the left and enter the passage to find the speedrun secret (which bypasses a large battle - but also bypasses another secret)
 * 16) In the outer mosque, there's a stack of crates past the second corner. They conceal an armor shard.
 * 17) In the extraction area, there's scaffolding at the center building. Climb it to the top, and grab +10 armor.  This scaffold is fragile, and might not survive the upcoming battle.